---
_id: '14802'
abstract:
- lang: eng
text: Frequency-stable lasers form the back bone of precision measurements in science
and technology. Such lasers typically attain their stability through frequency
locking to reference cavities. State-of-the-art locking performances to date had
been achieved using frequency modulation based methods, complemented with active
drift cancellation systems. We demonstrate an all passive, modulation-free laser-cavity
locking technique (squash locking) that utilizes changes in spatial beam ellipticity
for error signal generation, and a coherent polarization post-selection for noise
resilience. By comparing two identically built proof-of-principle systems, we
show a frequency locking instability of 5×10−7 relative to
the cavity linewidth at 10 s averaging. The results surpass the demonstrated performances
of methods engineered over the last five decades, potentially enabling an advancement
in the precision control of lasers, while creating avenues for bridging the performance
gaps between industrial grade lasers with scientific ones due to the afforded
simplicity and scalability.
acknowledgement: We thank Rishabh Sahu and Sebastian Wald for technical contributions
to the experiment. Funding by Institute of Science and Technology Austria.
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Fritz R
full_name: Diorico, Fritz R
id: 2E054C4C-F248-11E8-B48F-1D18A9856A87
last_name: Diorico
orcid: 0000-0002-4947-8924
- first_name: Artem
full_name: Zhutov, Artem
id: 0f02ed6a-b514-11ee-b891-8379c5f19cb7
last_name: Zhutov
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
date_created: 2024-01-15T10:25:38Z
date_published: 2024-01-20T00:00:00Z
date_updated: 2024-08-19T09:52:20Z
day: '20'
ddc:
- '530'
department:
- _id: OnHo
doi: 10.1364/optica.507451
external_id:
arxiv:
- '2202.13212'
file:
- access_level: open_access
checksum: eb99ca7d0fe73e22f121875175546ed7
content_type: application/pdf
creator: dernst
date_created: 2024-01-17T08:53:16Z
date_updated: 2024-01-17T08:53:16Z
file_id: '14824'
file_name: 2023_Optica_Diorico.pdf
file_size: 4558986
relation: main_file
success: 1
file_date_updated: 2024-01-17T08:53:16Z
has_accepted_license: '1'
intvolume: ' 11'
issue: '1'
keyword:
- Atomic and Molecular Physics
- and Optics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: 26-31
publication: Optica
publication_identifier:
issn:
- 2334-2536
publication_status: published
publisher: Optica Publishing Group
quality_controlled: '1'
status: public
title: 'Laser-cavity locking utilizing beam ellipticity: accessing the 10−7
instability scale relative to cavity linewidth'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 11
year: '2024'
...
---
_id: '14980'
abstract:
- lang: eng
text: Precision sensing and manipulation of milligram-scale mechanical oscillators
has attracted growing interest in the fields of table-top explorations of gravity
and tests of quantum mechanics at macroscopic scales. Torsional oscillators present
an opportunity in this regard due to their remarked isolation from environmental
noise. For torsional motion, an effective employment of optical cavities to enhance
optomechanical interactions—as already established for linear oscillators—so far
faced certain challenges. Here, we propose a concept for sensing and manipulating
torsional motion, where exclusively the torsional rotations of a pendulum are
mapped onto the path length of a single two-mirror optical cavity. The concept
inherently alleviates many limitations of previous approaches. A proof-of-principle
experiment is conducted with a rigidly controlled pendulum to explore the sensing
aspects of the concept and to identify practical limitations in a potential state-of-the
art setup. Based on this study, we anticipate development of precision torque
sensors utilizing torsional pendulums that can support sensitivities below 10−19Nm/√Hz,
while the motion of the pendulums are dominated by quantum radiation pressure
noise at sub-microwatts of incoming laser power. These developments will provide
horizons for experiments at the interface of quantum mechanics and gravity.
acknowledgement: "We thank Pere Rosselló for his contributions to the initial modeling
of the presented sensing technique. This work was supported by Institute of Science
and Technology Austria, and\r\nthe European Research Council under Grant No. 101087907
(ERC CoG QuHAMP)."
article_number: '013141'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Sofya
full_name: Agafonova, Sofya
id: 09501ff6-dca7-11ea-a8ae-b3e0b9166e80
last_name: Agafonova
orcid: 0000-0003-0582-2946
- first_name: Umang
full_name: Mishra, Umang
id: 4328fa4c-f128-11eb-9611-c107b0fe4d51
last_name: Mishra
- first_name: Fritz R
full_name: Diorico, Fritz R
id: 2E054C4C-F248-11E8-B48F-1D18A9856A87
last_name: Diorico
orcid: 0000-0002-4947-8924
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
citation:
ama: Agafonova S, Mishra U, Diorico FR, Hosten O. Zigzag optical cavity for sensing
and controlling torsional motion. Physical Review Research. 2024;6(1).
doi:10.1103/physrevresearch.6.013141
apa: Agafonova, S., Mishra, U., Diorico, F. R., & Hosten, O. (2024). Zigzag
optical cavity for sensing and controlling torsional motion. Physical Review
Research. American Physical Society. https://doi.org/10.1103/physrevresearch.6.013141
chicago: Agafonova, Sofya, Umang Mishra, Fritz R Diorico, and Onur Hosten. “Zigzag
Optical Cavity for Sensing and Controlling Torsional Motion.” Physical Review
Research. American Physical Society, 2024. https://doi.org/10.1103/physrevresearch.6.013141.
ieee: S. Agafonova, U. Mishra, F. R. Diorico, and O. Hosten, “Zigzag optical cavity
for sensing and controlling torsional motion,” Physical Review Research,
vol. 6, no. 1. American Physical Society, 2024.
ista: Agafonova S, Mishra U, Diorico FR, Hosten O. 2024. Zigzag optical cavity for
sensing and controlling torsional motion. Physical Review Research. 6(1), 013141.
mla: Agafonova, Sofya, et al. “Zigzag Optical Cavity for Sensing and Controlling
Torsional Motion.” Physical Review Research, vol. 6, no. 1, 013141, American
Physical Society, 2024, doi:10.1103/physrevresearch.6.013141.
short: S. Agafonova, U. Mishra, F.R. Diorico, O. Hosten, Physical Review Research
6 (2024).
date_created: 2024-02-12T11:42:18Z
date_published: 2024-02-05T00:00:00Z
date_updated: 2024-02-12T11:49:06Z
day: '05'
ddc:
- '530'
department:
- _id: OnHo
doi: 10.1103/physrevresearch.6.013141
external_id:
arxiv:
- '2306.12804'
file:
- access_level: open_access
checksum: 3a39ebffb24c1cc1dd0b547a726dc52d
content_type: application/pdf
creator: dernst
date_created: 2024-02-12T11:46:50Z
date_updated: 2024-02-12T11:46:50Z
file_id: '14981'
file_name: 2024_PhysicalRevResearch_Agafonova.pdf
file_size: 1437167
relation: main_file
success: 1
file_date_updated: 2024-02-12T11:46:50Z
has_accepted_license: '1'
intvolume: ' 6'
issue: '1'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
project:
- _id: bdb2a702-d553-11ed-ba76-f12e3e5a3bc6
grant_number: '101087907'
name: 'A quantum hybrid of atoms and milligram-scale pendulums: towards gravitational
quantum mechanics'
publication: Physical Review Research
publication_identifier:
eissn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Zigzag optical cavity for sensing and controlling torsional motion
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 6
year: '2024'
...
---
_id: '14749'
abstract:
- lang: eng
text: We unveil a powerful method for the stabilization of laser injection locking
based on sensing variations in the output beam ellipticity of an optically seeded
laser. The effect arises due to an interference between the seeding beam and the
injected laser output. We demonstrate the method for a commercial semiconductor
laser without the need for any internal changes to the readily operational injection
locked laser system that was used. The method can also be used to increase the
mode-hop free tuning range of lasers, and has the potential to fill a void in
the low-noise laser industry.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Umang
full_name: Mishra, Umang
id: 4328fa4c-f128-11eb-9611-c107b0fe4d51
last_name: Mishra
- first_name: Vyacheslav
full_name: Li, Vyacheslav
id: 3A4FAA92-F248-11E8-B48F-1D18A9856A87
last_name: Li
- first_name: Sebastian
full_name: Wald, Sebastian
id: 133F200A-B015-11E9-AD41-0EDAE5697425
last_name: Wald
- first_name: Sofya
full_name: Agafonova, Sofya
id: 09501ff6-dca7-11ea-a8ae-b3e0b9166e80
last_name: Agafonova
orcid: 0000-0003-0582-2946
- first_name: Fritz R
full_name: Diorico, Fritz R
id: 2E054C4C-F248-11E8-B48F-1D18A9856A87
last_name: Diorico
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
citation:
ama: Mishra U, Li V, Wald S, Agafonova S, Diorico FR, Hosten O. Monitoring and active
stabilization of laser injection locking using beam ellipticity. Optics Letters.
2023;48(15):3973-3976. doi:10.1364/ol.495553
apa: Mishra, U., Li, V., Wald, S., Agafonova, S., Diorico, F. R., & Hosten,
O. (2023). Monitoring and active stabilization of laser injection locking using
beam ellipticity. Optics Letters. Optica Publishing Group. https://doi.org/10.1364/ol.495553
chicago: Mishra, Umang, Vyacheslav Li, Sebastian Wald, Sofya Agafonova, Fritz R
Diorico, and Onur Hosten. “Monitoring and Active Stabilization of Laser Injection
Locking Using Beam Ellipticity.” Optics Letters. Optica Publishing Group,
2023. https://doi.org/10.1364/ol.495553.
ieee: U. Mishra, V. Li, S. Wald, S. Agafonova, F. R. Diorico, and O. Hosten, “Monitoring
and active stabilization of laser injection locking using beam ellipticity,” Optics
Letters, vol. 48, no. 15. Optica Publishing Group, pp. 3973–3976, 2023.
ista: Mishra U, Li V, Wald S, Agafonova S, Diorico FR, Hosten O. 2023. Monitoring
and active stabilization of laser injection locking using beam ellipticity. Optics
Letters. 48(15), 3973–3976.
mla: Mishra, Umang, et al. “Monitoring and Active Stabilization of Laser Injection
Locking Using Beam Ellipticity.” Optics Letters, vol. 48, no. 15, Optica
Publishing Group, 2023, pp. 3973–76, doi:10.1364/ol.495553.
short: U. Mishra, V. Li, S. Wald, S. Agafonova, F.R. Diorico, O. Hosten, Optics
Letters 48 (2023) 3973–3976.
date_created: 2024-01-08T13:01:46Z
date_published: 2023-07-21T00:00:00Z
date_updated: 2024-01-09T08:09:32Z
day: '21'
department:
- _id: OnHo
doi: 10.1364/ol.495553
external_id:
arxiv:
- '2212.01266'
intvolume: ' 48'
issue: '15'
keyword:
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
month: '07'
oa_version: Preprint
page: 3973-3976
publication: Optics Letters
publication_identifier:
eissn:
- 1539-4794
issn:
- 0146-9592
publication_status: published
publisher: Optica Publishing Group
quality_controlled: '1'
scopus_import: '1'
status: public
title: Monitoring and active stabilization of laser injection locking using beam ellipticity
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 48
year: '2023'
...
---
_id: '14759'
abstract:
- lang: eng
text: "Proper operation of electro-optic I/Q modulators relies on precise adjustment
and control of the relative phase biases between the modulator’s internal interferometer
arms. We present an all-analog phase bias locking scheme where error signals are
obtained from the beat between the optical carrier and optical tones generated
by an auxiliary 2 MHz \U0001D445\U0001D439 tone to lock the phases of all three
involved interferometers for operation up to 10 GHz. With the developed method,
we demonstrate an I/Q modulator in carrier-suppressed single-sideband mode, where
the suppressed carrier and sideband are locked at optical power levels <−27dB\r\n
relative to the transmitted sideband. We describe a simple analytical model for
calculating the error signals and detail the implementation of the electronic
circuitry for the implementation of the method."
acknowledgement: We thank Jakob Vorlaufer for technical contributions and Vyacheslav
Li and Sofia Agafonova for comments on the manuscript.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Sebastian
full_name: Wald, Sebastian
id: 133F200A-B015-11E9-AD41-0EDAE5697425
last_name: Wald
orcid: 0000-0002-5869-1604
- first_name: Fritz R
full_name: Diorico, Fritz R
id: 2E054C4C-F248-11E8-B48F-1D18A9856A87
last_name: Diorico
orcid: 0000-0002-4947-8924
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
citation:
ama: Wald S, Diorico FR, Hosten O. Analog stabilization of an electro-optic I/Q
modulator with an auxiliary modulation tone. Applied Optics. 2023;62(1):1-7.
doi:10.1364/ao.474118
apa: Wald, S., Diorico, F. R., & Hosten, O. (2023). Analog stabilization of
an electro-optic I/Q modulator with an auxiliary modulation tone. Applied Optics.
Optica Publishing Group. https://doi.org/10.1364/ao.474118
chicago: Wald, Sebastian, Fritz R Diorico, and Onur Hosten. “Analog Stabilization
of an Electro-Optic I/Q Modulator with an Auxiliary Modulation Tone.” Applied
Optics. Optica Publishing Group, 2023. https://doi.org/10.1364/ao.474118.
ieee: S. Wald, F. R. Diorico, and O. Hosten, “Analog stabilization of an electro-optic
I/Q modulator with an auxiliary modulation tone,” Applied Optics, vol.
62, no. 1. Optica Publishing Group, pp. 1–7, 2023.
ista: Wald S, Diorico FR, Hosten O. 2023. Analog stabilization of an electro-optic
I/Q modulator with an auxiliary modulation tone. Applied Optics. 62(1), 1–7.
mla: Wald, Sebastian, et al. “Analog Stabilization of an Electro-Optic I/Q Modulator
with an Auxiliary Modulation Tone.” Applied Optics, vol. 62, no. 1, Optica
Publishing Group, 2023, pp. 1–7, doi:10.1364/ao.474118.
short: S. Wald, F.R. Diorico, O. Hosten, Applied Optics 62 (2023) 1–7.
date_created: 2024-01-08T13:19:14Z
date_published: 2023-01-01T00:00:00Z
date_updated: 2024-01-09T10:10:34Z
day: '01'
department:
- _id: OnHo
doi: 10.1364/ao.474118
external_id:
arxiv:
- '2208.11591'
intvolume: ' 62'
issue: '1'
keyword:
- Atomic and Molecular Physics
- and Optics
- Engineering (miscellaneous)
- Electrical and Electronic Engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2208.11591
month: '01'
oa: 1
oa_version: Preprint
page: 1-7
publication: Applied Optics
publication_identifier:
eissn:
- 2155-3165
issn:
- 1559-128X
publication_status: published
publisher: Optica Publishing Group
quality_controlled: '1'
scopus_import: '1'
status: public
title: Analog stabilization of an electro-optic I/Q modulator with an auxiliary modulation
tone
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 62
year: '2023'
...
---
_id: '11438'
abstract:
- lang: eng
text: Lasers with well-controlled relative frequencies are indispensable for many
applications in science and technology. We present a frequency-offset locking
method for lasers based on beat-frequency discrimination utilizing hybrid electronic
LC filters. The method is specifically designed for decoupling the tightness of
the lock from the broadness of its capture range. The presented demonstration
locks two free-running diode lasers at 780 nm with a 5.5-GHz offset. It displays
an offset frequency instability below 55 Hz for time scales in excess of 1000
s and a minimum of 12 Hz at 10-s averaging. The performance is complemented with
a 190-MHz lock-capture range, a tuning range of up to 1 GHz, and a frequency ramp
agility of 200kHz/μs.
acknowledgement: This work was supported by IST Austria. The authors thank Yueheng
Shi for technical contributions.
article_number: '054031'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Vyacheslav
full_name: Li, Vyacheslav
id: 3A4FAA92-F248-11E8-B48F-1D18A9856A87
last_name: Li
- first_name: Fritz R
full_name: Diorico, Fritz R
id: 2E054C4C-F248-11E8-B48F-1D18A9856A87
last_name: Diorico
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
citation:
ama: Li V, Diorico FR, Hosten O. Laser frequency-offset locking at 10-Hz-level instability
using hybrid electronic filters. Physical Review Applied. 2022;17(5). doi:10.1103/physrevapplied.17.054031
apa: Li, V., Diorico, F. R., & Hosten, O. (2022). Laser frequency-offset locking
at 10-Hz-level instability using hybrid electronic filters. Physical Review
Applied. American Physical Society. https://doi.org/10.1103/physrevapplied.17.054031
chicago: Li, Vyacheslav, Fritz R Diorico, and Onur Hosten. “Laser Frequency-Offset
Locking at 10-Hz-Level Instability Using Hybrid Electronic Filters.” Physical
Review Applied. American Physical Society, 2022. https://doi.org/10.1103/physrevapplied.17.054031.
ieee: V. Li, F. R. Diorico, and O. Hosten, “Laser frequency-offset locking at 10-Hz-level
instability using hybrid electronic filters,” Physical Review Applied,
vol. 17, no. 5. American Physical Society, 2022.
ista: Li V, Diorico FR, Hosten O. 2022. Laser frequency-offset locking at 10-Hz-level
instability using hybrid electronic filters. Physical Review Applied. 17(5), 054031.
mla: Li, Vyacheslav, et al. “Laser Frequency-Offset Locking at 10-Hz-Level Instability
Using Hybrid Electronic Filters.” Physical Review Applied, vol. 17, no.
5, 054031, American Physical Society, 2022, doi:10.1103/physrevapplied.17.054031.
short: V. Li, F.R. Diorico, O. Hosten, Physical Review Applied 17 (2022).
date_created: 2022-06-07T08:07:59Z
date_published: 2022-05-19T00:00:00Z
date_updated: 2023-08-03T07:18:34Z
day: '19'
department:
- _id: GradSch
- _id: OnHo
doi: 10.1103/physrevapplied.17.054031
external_id:
arxiv:
- '2111.13194'
isi:
- '000880670300001'
intvolume: ' 17'
isi: 1
issue: '5'
keyword:
- General Physics and Astronomy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.2111.13194'
month: '05'
oa: 1
oa_version: Preprint
publication: Physical Review Applied
publication_identifier:
issn:
- 2331-7019
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Laser frequency-offset locking at 10-Hz-level instability using hybrid electronic
filters
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 17
year: '2022'
...
---
_id: '10652'
abstract:
- lang: eng
text: Finding a feasible scheme for testing the quantum mechanical nature of the
gravitational interaction has been attracting an increasing level of attention.
Gravity mediated entanglement generation so far appears to be the key ingredient
for a potential experiment. In a recent proposal [D. Carney et al., PRX Quantum
2, 030330 (2021)] combining an atom interferometer with a low-frequency mechanical
oscillator, a coherence revival test is proposed for verifying this entanglement
generation. With measurements performed only on the atoms, this protocol bypasses
the need for correlation measurements. Here, we explore formulations of such a
protocol, and specifically find that in the envisioned regime of operation with
high thermal excitation, semiclassical models, where there is no concept of entanglement,
also give the same experimental signatures. We elucidate in a fully quantum mechanical
calculation that entanglement is not the source of the revivals in the relevant
parameter regime. We argue that, in its current form, the suggested test is only
relevant if the oscillator is nearly in a pure quantum state, and in this regime
the effects are too small to be measurable. We further discuss potential open
ends. The results highlight the importance and subtleties of explicitly considering
how the quantum case differs from the classical expectations when testing for
the quantum mechanical nature of a physical system.
acknowledgement: O.H. is supported by Institute of Science and Technology Austria.
The author thanks Jess Riedel for discussions.
article_number: '013023'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
citation:
ama: Hosten O. Constraints on probing quantum coherence to infer gravitational entanglement.
Physical Review Research. 2022;4(1). doi:10.1103/PhysRevResearch.4.013023
apa: Hosten, O. (2022). Constraints on probing quantum coherence to infer gravitational
entanglement. Physical Review Research. American Physical Society. https://doi.org/10.1103/PhysRevResearch.4.013023
chicago: Hosten, Onur. “Constraints on Probing Quantum Coherence to Infer Gravitational
Entanglement.” Physical Review Research. American Physical Society, 2022.
https://doi.org/10.1103/PhysRevResearch.4.013023.
ieee: O. Hosten, “Constraints on probing quantum coherence to infer gravitational
entanglement,” Physical Review Research, vol. 4, no. 1. American Physical
Society, 2022.
ista: Hosten O. 2022. Constraints on probing quantum coherence to infer gravitational
entanglement. Physical Review Research. 4(1), 013023.
mla: Hosten, Onur. “Constraints on Probing Quantum Coherence to Infer Gravitational
Entanglement.” Physical Review Research, vol. 4, no. 1, 013023, American
Physical Society, 2022, doi:10.1103/PhysRevResearch.4.013023.
short: O. Hosten, Physical Review Research 4 (2022).
date_created: 2022-01-23T23:01:27Z
date_published: 2022-01-10T00:00:00Z
date_updated: 2022-05-16T11:21:38Z
day: '10'
ddc:
- '530'
department:
- _id: OnHo
doi: 10.1103/PhysRevResearch.4.013023
file:
- access_level: open_access
checksum: 7254d267a0633ca5d63131d345e58686
content_type: application/pdf
creator: cchlebak
date_created: 2022-01-24T11:12:44Z
date_updated: 2022-01-24T11:12:44Z
file_id: '10660'
file_name: 2022_PhysRevResearch_Hosten.pdf
file_size: 236329
relation: main_file
success: 1
file_date_updated: 2022-01-24T11:12:44Z
has_accepted_license: '1'
intvolume: ' 4'
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Constraints on probing quantum coherence to infer gravitational entanglement
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 4
year: '2022'
...
---
_id: '9331'
abstract:
- lang: eng
text: 'Quantum entanglement has been generated and verified in cold-atom experiments
and used to make atom-interferometric measurements below the shot-noise limit.
However, current state-of-the-art cold-atom devices exploit separable (i.e., unentangled)
atomic states. This perspective piece asks the question: can entanglement usefully
improve cold-atom sensors, in the sense that it gives new sensing capabilities
unachievable with current state-of-the-art devices? We briefly review the state-of-the-art
in precision cold-atom sensing, focusing on clocks and inertial sensors, identifying
the potential benefits entanglement could bring to these devices, and the challenges
that need to be overcome to realize these benefits. We survey demonstrated methods
of generating metrologically useful entanglement in cold-atom systems, note their
relative strengths and weaknesses, and assess their prospects for near-to-medium
term quantum-enhanced cold-atom sensing.'
acknowledgement: We acknowledge fruitful discussions with John Close, Chris Freier,
Kyle Hardman, Joseph Hope, and Paul Wigley, and insightful suggestions made by Franck
Pereira dos Santos on behalf of the Atom Interferometry and Inertial Sensors team
at SYRTE. S.S.S. was supported by an Australian Research Council Discovery Early
Career Researcher Award (DECRA), Project No. DE200100495. O.H. was supported by
IST Austria.
article_number: '140501'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Stuart S.
full_name: Szigeti, Stuart S.
last_name: Szigeti
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Simon A.
full_name: Haine, Simon A.
last_name: Haine
citation:
ama: 'Szigeti SS, Hosten O, Haine SA. Improving cold-atom sensors with quantum entanglement:
Prospects and challenges. Applied Physics Letters. 2021;118(14). doi:10.1063/5.0050235'
apa: 'Szigeti, S. S., Hosten, O., & Haine, S. A. (2021). Improving cold-atom
sensors with quantum entanglement: Prospects and challenges. Applied Physics
Letters. AIP Publishing. https://doi.org/10.1063/5.0050235'
chicago: 'Szigeti, Stuart S., Onur Hosten, and Simon A. Haine. “Improving Cold-Atom
Sensors with Quantum Entanglement: Prospects and Challenges.” Applied Physics
Letters. AIP Publishing, 2021. https://doi.org/10.1063/5.0050235.'
ieee: 'S. S. Szigeti, O. Hosten, and S. A. Haine, “Improving cold-atom sensors with
quantum entanglement: Prospects and challenges,” Applied Physics Letters,
vol. 118, no. 14. AIP Publishing, 2021.'
ista: 'Szigeti SS, Hosten O, Haine SA. 2021. Improving cold-atom sensors with quantum
entanglement: Prospects and challenges. Applied Physics Letters. 118(14), 140501.'
mla: 'Szigeti, Stuart S., et al. “Improving Cold-Atom Sensors with Quantum Entanglement:
Prospects and Challenges.” Applied Physics Letters, vol. 118, no. 14, 140501,
AIP Publishing, 2021, doi:10.1063/5.0050235.'
short: S.S. Szigeti, O. Hosten, S.A. Haine, Applied Physics Letters 118 (2021).
date_created: 2021-04-18T22:01:40Z
date_published: 2021-04-07T00:00:00Z
date_updated: 2023-08-07T14:36:42Z
day: '07'
department:
- _id: OnHo
doi: 10.1063/5.0050235
external_id:
arxiv:
- '2010.09168'
isi:
- '000637702100001'
intvolume: ' 118'
isi: 1
issue: '14'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2010.09168
month: '04'
oa: 1
oa_version: Preprint
publication: Applied Physics Letters
publication_identifier:
issn:
- '00036951'
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Improving cold-atom sensors with quantum entanglement: Prospects and challenges'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 118
year: '2021'
...
---
_id: '8285'
abstract:
- lang: eng
text: We demonstrate the utility of optical cavity generated spin-squeezed states
in free space atomic fountain clocks in ensembles of 390 000 87Rb atoms. Fluorescence
imaging, correlated to an initial quantum nondemolition measurement, is used for
population spectroscopy after the atoms are released from a confining lattice.
For a free fall time of 4 milliseconds, we resolve a single-shot phase sensitivity
of 814(61) microradians, which is 5.8(0.6) decibels (dB) below the quantum projection
limit. We observe that this squeezing is preserved as the cloud expands to a roughly
200 μm radius and falls roughly 300 μm in free space. Ramsey spectroscopy with
240 000 atoms at a 3.6 ms Ramsey time results in a single-shot fractional frequency
stability of 8.4(0.2)×10−12, 3.8(0.2) dB below the quantum projection limit. The
sensitivity and stability are limited by the technical noise in the fluorescence
detection protocol and the microwave system, respectively.
acknowledgement: This work is supported by the Office of Naval Research (N00014-16-1-2927-
A00003), Vannevar Bush Faculty Fellowship (N00014-16-1-2812- P00005), Department
of Energy (DE-SC0019174- 0001), and Defense Threat Reduction Agency (HDTRA1-15-1-0017-
P00005).
article_number: '043202'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Benjamin K.
full_name: Malia, Benjamin K.
last_name: Malia
- first_name: Julián
full_name: Martínez-Rincón, Julián
last_name: Martínez-Rincón
- first_name: Yunfan
full_name: Wu, Yunfan
last_name: Wu
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Mark A.
full_name: Kasevich, Mark A.
last_name: Kasevich
citation:
ama: Malia BK, Martínez-Rincón J, Wu Y, Hosten O, Kasevich MA. Free space Ramsey
spectroscopy in rubidium with noise below the quantum projection limit. Physical
Review Letters. 2020;125(4). doi:10.1103/PhysRevLett.125.043202
apa: Malia, B. K., Martínez-Rincón, J., Wu, Y., Hosten, O., & Kasevich, M. A.
(2020). Free space Ramsey spectroscopy in rubidium with noise below the quantum
projection limit. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.125.043202
chicago: Malia, Benjamin K., Julián Martínez-Rincón, Yunfan Wu, Onur Hosten, and
Mark A. Kasevich. “Free Space Ramsey Spectroscopy in Rubidium with Noise below
the Quantum Projection Limit.” Physical Review Letters. American Physical
Society, 2020. https://doi.org/10.1103/PhysRevLett.125.043202.
ieee: B. K. Malia, J. Martínez-Rincón, Y. Wu, O. Hosten, and M. A. Kasevich, “Free
space Ramsey spectroscopy in rubidium with noise below the quantum projection
limit,” Physical Review Letters, vol. 125, no. 4. American Physical Society,
2020.
ista: Malia BK, Martínez-Rincón J, Wu Y, Hosten O, Kasevich MA. 2020. Free space
Ramsey spectroscopy in rubidium with noise below the quantum projection limit.
Physical Review Letters. 125(4), 043202.
mla: Malia, Benjamin K., et al. “Free Space Ramsey Spectroscopy in Rubidium with
Noise below the Quantum Projection Limit.” Physical Review Letters, vol.
125, no. 4, 043202, American Physical Society, 2020, doi:10.1103/PhysRevLett.125.043202.
short: B.K. Malia, J. Martínez-Rincón, Y. Wu, O. Hosten, M.A. Kasevich, Physical
Review Letters 125 (2020).
date_created: 2020-08-24T06:24:04Z
date_published: 2020-07-24T00:00:00Z
date_updated: 2023-10-18T08:38:35Z
day: '24'
department:
- _id: OnHo
doi: 10.1103/PhysRevLett.125.043202
external_id:
arxiv:
- '1912.10218'
isi:
- '000552227400008'
pmid:
- '32794788'
intvolume: ' 125'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1912.10218
month: '07'
oa: 1
oa_version: Preprint
pmid: 1
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Free space Ramsey spectroscopy in rubidium with noise below the quantum projection
limit
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 125
year: '2020'
...
---
_id: '8319'
abstract:
- lang: eng
text: We demonstrate that releasing atoms into free space from an optical lattice
does not deteriorate cavity-generated spin squeezing for metrological purposes.
In this work, an ensemble of 500000 spin-squeezed atoms in a high-finesse optical
cavity with near-uniform atom-cavity coupling is prepared, released into free
space, recaptured in the cavity, and probed. Up to ∼10 dB of metrologically relevant
squeezing is retrieved for 700μs free-fall times, and decaying levels of squeezing
are realized for up to 3 ms free-fall times. The degradation of squeezing results
from loss of atom-cavity coupling homogeneity between the initial squeezed state
generation and final collective state readout. A theoretical model is developed
to quantify this degradation and this model is experimentally validated.
acknowledgement: We thank N. Engelsen for comments on the manuscript. This work was
supported by the Office of Naval Research, Vannevar Bush Faculty Fellowship, Department
of Energy, and Defense Threat Reduction Agency. R.K. was partly supported by the
AQT/INQNET program at Caltech.
article_number: '012224'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Yunfan
full_name: Wu, Yunfan
last_name: Wu
- first_name: Rajiv
full_name: Krishnakumar, Rajiv
last_name: Krishnakumar
- first_name: Julián
full_name: Martínez-Rincón, Julián
last_name: Martínez-Rincón
- first_name: Benjamin K.
full_name: Malia, Benjamin K.
last_name: Malia
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Mark A.
full_name: Kasevich, Mark A.
last_name: Kasevich
citation:
ama: Wu Y, Krishnakumar R, Martínez-Rincón J, Malia BK, Hosten O, Kasevich MA. Retrieval
of cavity-generated atomic spin squeezing after free-space release. Physical
Review A. 2020;102(1). doi:10.1103/PhysRevA.102.012224
apa: Wu, Y., Krishnakumar, R., Martínez-Rincón, J., Malia, B. K., Hosten, O., &
Kasevich, M. A. (2020). Retrieval of cavity-generated atomic spin squeezing after
free-space release. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.102.012224
chicago: Wu, Yunfan, Rajiv Krishnakumar, Julián Martínez-Rincón, Benjamin K. Malia,
Onur Hosten, and Mark A. Kasevich. “Retrieval of Cavity-Generated Atomic Spin
Squeezing after Free-Space Release.” Physical Review A. American Physical
Society, 2020. https://doi.org/10.1103/PhysRevA.102.012224.
ieee: Y. Wu, R. Krishnakumar, J. Martínez-Rincón, B. K. Malia, O. Hosten, and M.
A. Kasevich, “Retrieval of cavity-generated atomic spin squeezing after free-space
release,” Physical Review A, vol. 102, no. 1. American Physical Society,
2020.
ista: Wu Y, Krishnakumar R, Martínez-Rincón J, Malia BK, Hosten O, Kasevich MA.
2020. Retrieval of cavity-generated atomic spin squeezing after free-space release.
Physical Review A. 102(1), 012224.
mla: Wu, Yunfan, et al. “Retrieval of Cavity-Generated Atomic Spin Squeezing after
Free-Space Release.” Physical Review A, vol. 102, no. 1, 012224, American
Physical Society, 2020, doi:10.1103/PhysRevA.102.012224.
short: Y. Wu, R. Krishnakumar, J. Martínez-Rincón, B.K. Malia, O. Hosten, M.A. Kasevich,
Physical Review A 102 (2020).
date_created: 2020-08-30T22:01:10Z
date_published: 2020-07-30T00:00:00Z
date_updated: 2024-02-28T13:11:28Z
day: '30'
department:
- _id: OnHo
doi: 10.1103/PhysRevA.102.012224
external_id:
arxiv:
- '1912.08334'
isi:
- '000555104200011'
intvolume: ' 102'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1912.08334
month: '07'
oa: 1
oa_version: Preprint
publication: Physical Review A
publication_identifier:
eissn:
- '24699934'
issn:
- '24699926'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Retrieval of cavity-generated atomic spin squeezing after free-space release
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 102
year: '2020'
...
---
_id: '593'
abstract:
- lang: eng
text: Bell correlations, indicating nonlocality in composite quantum systems, were
until recently only seen in small systems. Here, we demonstrate Bell correlations
in squeezed states of 5×105 Rb87 atoms. The correlations are inferred using collective
measurements as witnesses and are statistically significant to 124 standard deviations.
The states are both generated and characterized using optical-cavity aided measurements.
author:
- first_name: Nils
full_name: Engelsen, Nils
last_name: Engelsen
- first_name: Rajiv
full_name: Krishnakumar, Rajiv
last_name: Krishnakumar
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Mark
full_name: Kasevich, Mark
last_name: Kasevich
citation:
ama: Engelsen N, Krishnakumar R, Hosten O, Kasevich M. Bell correlations in spin-squeezed
states of 500 000 atoms. Physical Review Letters. 2017;118(14). doi:10.1103/PhysRevLett.118.140401
apa: Engelsen, N., Krishnakumar, R., Hosten, O., & Kasevich, M. (2017). Bell
correlations in spin-squeezed states of 500 000 atoms. Physical Review Letters.
American Physical Society. https://doi.org/10.1103/PhysRevLett.118.140401
chicago: Engelsen, Nils, Rajiv Krishnakumar, Onur Hosten, and Mark Kasevich. “Bell
Correlations in Spin-Squeezed States of 500 000 Atoms.” Physical Review Letters.
American Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.118.140401.
ieee: N. Engelsen, R. Krishnakumar, O. Hosten, and M. Kasevich, “Bell correlations
in spin-squeezed states of 500 000 atoms,” Physical Review Letters, vol.
118, no. 14. American Physical Society, 2017.
ista: Engelsen N, Krishnakumar R, Hosten O, Kasevich M. 2017. Bell correlations
in spin-squeezed states of 500 000 atoms. Physical Review Letters. 118(14).
mla: Engelsen, Nils, et al. “Bell Correlations in Spin-Squeezed States of 500 000
Atoms.” Physical Review Letters, vol. 118, no. 14, American Physical Society,
2017, doi:10.1103/PhysRevLett.118.140401.
short: N. Engelsen, R. Krishnakumar, O. Hosten, M. Kasevich, Physical Review Letters
118 (2017).
date_created: 2018-12-11T11:47:23Z
date_published: 2017-04-03T00:00:00Z
date_updated: 2021-01-12T08:05:16Z
day: '03'
doi: 10.1103/PhysRevLett.118.140401
extern: '1'
intvolume: ' 118'
issue: '14'
language:
- iso: eng
month: '04'
oa_version: None
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
publist_id: '7212'
status: public
title: Bell correlations in spin-squeezed states of 500 000 atoms
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 118
year: '2017'
...
---
_id: '587'
abstract:
- lang: eng
text: Quantum metrology exploits entangled states of particles to improve sensing
precision beyond the limit achievable with uncorrelated particles. All previous
methods required detection noise levels below this standard quantum limit to realize
the benefits of the intrinsic sensitivity provided by these states.We experimentally
demonstrate a widely applicable method for entanglement-enhanced measurements
without low-noise detection. The method involves an intermediate quantum phase
magnification step that eases implementation complexity. We used it to perform
squeezed-state metrology 8 decibels below the standard quantum limit with a detection
system that has a noise floor 10 decibels above the standard quantum limit.
author:
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Rajiv
full_name: Krishnakumar, Rajiv
last_name: Krishnakumar
- first_name: Nils
full_name: Engelsen, Nils J
last_name: Engelsen
- first_name: Mark
full_name: Kasevich, Mark A
last_name: Kasevich
citation:
ama: Hosten O, Krishnakumar R, Engelsen N, Kasevich M. Quantum phase magnification.
Science. 2016;352(6293):1552-1555. doi:10.1126/science.aaf3397
apa: Hosten, O., Krishnakumar, R., Engelsen, N., & Kasevich, M. (2016). Quantum
phase magnification. Science. American Association for the Advancement
of Science. https://doi.org/10.1126/science.aaf3397
chicago: Hosten, Onur, Rajiv Krishnakumar, Nils Engelsen, and Mark Kasevich. “Quantum
Phase Magnification.” Science. American Association for the Advancement
of Science, 2016. https://doi.org/10.1126/science.aaf3397.
ieee: O. Hosten, R. Krishnakumar, N. Engelsen, and M. Kasevich, “Quantum phase magnification,”
Science, vol. 352, no. 6293. American Association for the Advancement of
Science, pp. 1552–1555, 2016.
ista: Hosten O, Krishnakumar R, Engelsen N, Kasevich M. 2016. Quantum phase magnification.
Science. 352(6293), 1552–1555.
mla: Hosten, Onur, et al. “Quantum Phase Magnification.” Science, vol. 352,
no. 6293, American Association for the Advancement of Science, 2016, pp. 1552–55,
doi:10.1126/science.aaf3397.
short: O. Hosten, R. Krishnakumar, N. Engelsen, M. Kasevich, Science 352 (2016)
1552–1555.
date_created: 2018-12-11T11:47:21Z
date_published: 2016-06-24T00:00:00Z
date_updated: 2021-01-12T08:05:06Z
day: '24'
doi: 10.1126/science.aaf3397
extern: 1
intvolume: ' 352'
issue: '6293'
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1601.07683
month: '06'
oa: 1
page: 1552 - 1555
publication: Science
publication_status: published
publisher: American Association for the Advancement of Science
publist_id: '7214'
quality_controlled: 0
status: public
title: Quantum phase magnification
type: journal_article
volume: 352
year: '2016'
...
---
_id: '588'
abstract:
- lang: eng
text: Quantum metrology uses quantum entanglement - correlations in the properties
of microscopic systems - to improve the statistical precision of physical measurements.
When measuring a signal, such as the phase shift of a light beam or an atomic
state, a prominent limitation to achievable precision arises from the noise associated
with the counting of uncorrelated probe particles. This noise, commonly referred
to as shot noise or projection noise, gives rise to the standard quantum limit
(SQL) to phase resolution. However, it can be mitigated down to the fundamental
Heisenberg limit by entangling the probe particles. Despite considerable experimental
progress in a variety of physical systems, a question that persists is whether
these methods can achieve performance levels that compare favourably with optimized
conventional (non-entangled) systems. Here we demonstrate an approach that achieves
unprecedented levels of metrological improvement using half a million 87Rb atoms
in their 'clock' states. The ensemble is 20.1 ± 0.3 decibels (100-fold) spin-squeezed
via an optical-cavity-based measurement. We directly resolve small microwave-induced
rotations 18.5 ± 0.3 decibels (70-fold) beyond the SQL. The single-shot phase
resolution of 147 microradians achieved by the apparatus is better than that achieved
by the best engineered cold atom sensors despite lower atom numbers. We infer
entanglement of more than 680 ± 35 particles in the atomic ensemble. Applications
include atomic clocks, inertial sensors, and fundamental physics experiments such
as tests of general relativity or searches for electron electric dipole moment.
To this end, we demonstrate an atomic clock measurement with a quantum enhancement
of 10.5 ± 0.3 decibels (11-fold), limited by the phase noise of our microwave
source.
author:
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Nils
full_name: Engelsen, Nils J
last_name: Engelsen
- first_name: Rajiv
full_name: Krishnakumar, Rajiv
last_name: Krishnakumar
- first_name: Mark
full_name: Kasevich, Mark A
last_name: Kasevich
citation:
ama: Hosten O, Engelsen N, Krishnakumar R, Kasevich M. Measurement noise 100 times
lower than the quantum-projection limit using entangled atoms. Nature.
2016;529(7587):505-508. doi:10.1038/nature16176
apa: Hosten, O., Engelsen, N., Krishnakumar, R., & Kasevich, M. (2016). Measurement
noise 100 times lower than the quantum-projection limit using entangled atoms.
Nature. Nature Publishing Group. https://doi.org/10.1038/nature16176
chicago: Hosten, Onur, Nils Engelsen, Rajiv Krishnakumar, and Mark Kasevich. “Measurement
Noise 100 Times Lower than the Quantum-Projection Limit Using Entangled Atoms.”
Nature. Nature Publishing Group, 2016. https://doi.org/10.1038/nature16176.
ieee: O. Hosten, N. Engelsen, R. Krishnakumar, and M. Kasevich, “Measurement noise
100 times lower than the quantum-projection limit using entangled atoms,” Nature,
vol. 529, no. 7587. Nature Publishing Group, pp. 505–508, 2016.
ista: Hosten O, Engelsen N, Krishnakumar R, Kasevich M. 2016. Measurement noise
100 times lower than the quantum-projection limit using entangled atoms. Nature.
529(7587), 505–508.
mla: Hosten, Onur, et al. “Measurement Noise 100 Times Lower than the Quantum-Projection
Limit Using Entangled Atoms.” Nature, vol. 529, no. 7587, Nature Publishing
Group, 2016, pp. 505–08, doi:10.1038/nature16176.
short: O. Hosten, N. Engelsen, R. Krishnakumar, M. Kasevich, Nature 529 (2016) 505–508.
date_created: 2018-12-11T11:47:21Z
date_published: 2016-01-28T00:00:00Z
date_updated: 2021-01-12T08:05:07Z
day: '28'
doi: 10.1038/nature16176
extern: 1
intvolume: ' 529'
issue: '7587'
month: '01'
page: 505 - 508
publication: Nature
publication_status: published
publisher: Nature Publishing Group
publist_id: '7215'
quality_controlled: 0
status: public
title: Measurement noise 100 times lower than the quantum-projection limit using entangled
atoms
type: journal_article
volume: 529
year: '2016'
...
---
_id: '592'
abstract:
- lang: eng
text: We create up to 20 dB spin-squeezed states of atomic ensembles using an optical
cavity-based measurement. The prepared states are suitable for atomic sensors
that require free space release of the atoms.
article_processing_charge: No
author:
- first_name: Nils
full_name: Engelsen, Nils
last_name: Engelsen
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Rajiv
full_name: Krishnakumar, Rajiv
last_name: Krishnakumar
- first_name: Mark
full_name: Kasevich, Mark
last_name: Kasevich
citation:
ama: 'Engelsen N, Hosten O, Krishnakumar R, Kasevich M. Engineering spin squeezed
states for quantum-enhanced atom interferometry. In: IEEE; 2016.'
apa: 'Engelsen, N., Hosten, O., Krishnakumar, R., & Kasevich, M. (2016). Engineering
spin squeezed states for quantum-enhanced atom interferometry. Presented at the
CLEO: Conference on Lasers and Electro Optics, San Jose, CA, United States: IEEE.'
chicago: Engelsen, Nils, Onur Hosten, Rajiv Krishnakumar, and Mark Kasevich. “Engineering
Spin Squeezed States for Quantum-Enhanced Atom Interferometry.” IEEE, 2016.
ieee: 'N. Engelsen, O. Hosten, R. Krishnakumar, and M. Kasevich, “Engineering spin
squeezed states for quantum-enhanced atom interferometry,” presented at the CLEO:
Conference on Lasers and Electro Optics, San Jose, CA, United States, 2016.'
ista: 'Engelsen N, Hosten O, Krishnakumar R, Kasevich M. 2016. Engineering spin
squeezed states for quantum-enhanced atom interferometry. CLEO: Conference on
Lasers and Electro Optics.'
mla: Engelsen, Nils, et al. Engineering Spin Squeezed States for Quantum-Enhanced
Atom Interferometry. IEEE, 2016.
short: N. Engelsen, O. Hosten, R. Krishnakumar, M. Kasevich, in:, IEEE, 2016.
conference:
end_date: 2016-06-10
location: San Jose, CA, United States
name: 'CLEO: Conference on Lasers and Electro Optics'
start_date: 2016-06-05
date_created: 2018-12-11T11:47:23Z
date_published: 2016-12-16T00:00:00Z
date_updated: 2021-01-12T08:05:15Z
day: '16'
extern: '1'
language:
- iso: eng
main_file_link:
- url: http://ieeexplore.ieee.org/document/7787611/
month: '12'
oa_version: None
publication_status: published
publisher: IEEE
publist_id: '7213'
quality_controlled: '1'
status: public
title: Engineering spin squeezed states for quantum-enhanced atom interferometry
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2016'
...
---
_id: '589'
abstract:
- lang: eng
text: We demonstrate a many-atom-cavity system with a high-finesse dual-wavelength
standing wave cavity in which all participating rubidium atoms are nearly identically
coupled to a 780-nm cavity mode. This homogeneous coupling is enforced by a one-dimensional
optical lattice formed by the field of a 1560-nm cavity mode.
author:
- first_name: Jongmin
full_name: Lee, Jongmin
last_name: Lee
- first_name: Geert
full_name: Vrijsen, Geert
last_name: Vrijsen
- first_name: Igor
full_name: Teper, Igor
last_name: Teper
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Mark
full_name: Kasevich, Mark A
last_name: Kasevich
citation:
ama: Lee J, Vrijsen G, Teper I, Hosten O, Kasevich M. Many-atom-cavity QED system
with homogeneous atom-cavity coupling. Optics Letters. 2014;39(13):4005-4008.
doi:10.1364/OL.39.004005
apa: Lee, J., Vrijsen, G., Teper, I., Hosten, O., & Kasevich, M. (2014). Many-atom-cavity
QED system with homogeneous atom-cavity coupling. Optics Letters. OSA.
https://doi.org/10.1364/OL.39.004005
chicago: Lee, Jongmin, Geert Vrijsen, Igor Teper, Onur Hosten, and Mark Kasevich.
“Many-Atom-Cavity QED System with Homogeneous Atom-Cavity Coupling.” Optics
Letters. OSA, 2014. https://doi.org/10.1364/OL.39.004005.
ieee: J. Lee, G. Vrijsen, I. Teper, O. Hosten, and M. Kasevich, “Many-atom-cavity
QED system with homogeneous atom-cavity coupling,” Optics Letters, vol.
39, no. 13. OSA, pp. 4005–4008, 2014.
ista: Lee J, Vrijsen G, Teper I, Hosten O, Kasevich M. 2014. Many-atom-cavity QED
system with homogeneous atom-cavity coupling. Optics Letters. 39(13), 4005–4008.
mla: Lee, Jongmin, et al. “Many-Atom-Cavity QED System with Homogeneous Atom-Cavity
Coupling.” Optics Letters, vol. 39, no. 13, OSA, 2014, pp. 4005–08, doi:10.1364/OL.39.004005.
short: J. Lee, G. Vrijsen, I. Teper, O. Hosten, M. Kasevich, Optics Letters 39 (2014)
4005–4008.
date_created: 2018-12-11T11:47:21Z
date_published: 2014-07-01T00:00:00Z
date_updated: 2021-01-12T08:05:09Z
day: '01'
doi: 10.1364/OL.39.004005
extern: 1
intvolume: ' 39'
issue: '13'
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1311.1805
month: '07'
oa: 1
page: 4005 - 4008
publication: Optics Letters
publication_status: published
publisher: OSA
publist_id: '7216'
quality_controlled: 0
status: public
title: Many-atom-cavity QED system with homogeneous atom-cavity coupling
type: journal_article
volume: 39
year: '2014'
...
---
_id: '590'
abstract:
- lang: eng
text: We present two methods of creating two orthogonally-polarized focal points
at customizable relative locations. These schemes may be critical for enhancing
entanglement sources and other applications.
alternative_title:
- Optics InfoBase Conference Papers
author:
- first_name: David
full_name: Schmid, David
last_name: Schmid
- first_name: Ting
full_name: Huang, Ting-Yu
last_name: Huang
- first_name: Radhika
full_name: Dirks, Radhika
last_name: Dirks
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Paul
full_name: Kwiat, Paul G
last_name: Kwiat
citation:
ama: 'Schmid D, Huang T, Dirks R, Hosten O, Kwiat P. Polarization dependent focusing.
In: OSA; 2013. doi:10.1364/QIM.2013.W6.23'
apa: 'Schmid, D., Huang, T., Dirks, R., Hosten, O., & Kwiat, P. (2013). Polarization
dependent focusing. Presented at the QIM: Quantum Information and Measurement,
OSA. https://doi.org/10.1364/QIM.2013.W6.23'
chicago: Schmid, David, Ting Huang, Radhika Dirks, Onur Hosten, and Paul Kwiat.
“Polarization Dependent Focusing.” OSA, 2013. https://doi.org/10.1364/QIM.2013.W6.23.
ieee: 'D. Schmid, T. Huang, R. Dirks, O. Hosten, and P. Kwiat, “Polarization dependent
focusing,” presented at the QIM: Quantum Information and Measurement, 2013.'
ista: 'Schmid D, Huang T, Dirks R, Hosten O, Kwiat P. 2013. Polarization dependent
focusing. QIM: Quantum Information and Measurement, Optics InfoBase Conference
Papers, .'
mla: Schmid, David, et al. Polarization Dependent Focusing. OSA, 2013, doi:10.1364/QIM.2013.W6.23.
short: D. Schmid, T. Huang, R. Dirks, O. Hosten, P. Kwiat, in:, OSA, 2013.
conference:
name: 'QIM: Quantum Information and Measurement'
date_created: 2018-12-11T11:47:22Z
date_published: 2013-01-01T00:00:00Z
date_updated: 2021-01-12T08:05:10Z
day: '01'
doi: 10.1364/QIM.2013.W6.23
extern: 1
month: '01'
publication_status: published
publisher: OSA
publist_id: '7217'
quality_controlled: 0
status: public
title: Polarization dependent focusing
type: conference
year: '2013'
...
---
_id: '591'
abstract:
- lang: eng
text: We present two methods for the precise independent focusing of orthogonal
linear polarizations of light at arbitrary relative locations. Our first scheme
uses a displaced lens in a polarization Sagnac interferometer to provide adjustable
longitudinal and lateral focal displacements via simple geometry; the second uses
uniaxial crystals to achieve the same effect in a compact collinear setup. We
develop the theoretical applications and limitations of our schemes, and provide
experimental confirmation of our calculations.
author:
- first_name: David
full_name: Schmid, David
last_name: Schmid
- first_name: Ting
full_name: Huang, Ting-Yu
last_name: Huang
- first_name: Shiraz
full_name: Hazrat, Shiraz
last_name: Hazrat
- first_name: Radhika
full_name: Dirks, Radhika
last_name: Dirks
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Stephan
full_name: Quint, Stephan
last_name: Quint
- first_name: Dickson
full_name: Thian, Dickson
last_name: Thian
- first_name: Paul
full_name: Kwiat, Paul G
last_name: Kwiat
citation:
ama: Schmid D, Huang T, Hazrat S, et al. Adjustable and robust methods for polarization-dependent
focusing. Optics Express. 2013;21(13):15538-15552. doi:10.1364/OE.21.015538
apa: Schmid, D., Huang, T., Hazrat, S., Dirks, R., Hosten, O., Quint, S., … Kwiat,
P. (2013). Adjustable and robust methods for polarization-dependent focusing.
Optics Express. Optical Society of America. https://doi.org/10.1364/OE.21.015538
chicago: Schmid, David, Ting Huang, Shiraz Hazrat, Radhika Dirks, Onur Hosten, Stephan
Quint, Dickson Thian, and Paul Kwiat. “Adjustable and Robust Methods for Polarization-Dependent
Focusing.” Optics Express. Optical Society of America, 2013. https://doi.org/10.1364/OE.21.015538.
ieee: D. Schmid et al., “Adjustable and robust methods for polarization-dependent
focusing,” Optics Express, vol. 21, no. 13. Optical Society of America,
pp. 15538–15552, 2013.
ista: Schmid D, Huang T, Hazrat S, Dirks R, Hosten O, Quint S, Thian D, Kwiat P.
2013. Adjustable and robust methods for polarization-dependent focusing. Optics
Express. 21(13), 15538–15552.
mla: Schmid, David, et al. “Adjustable and Robust Methods for Polarization-Dependent
Focusing.” Optics Express, vol. 21, no. 13, Optical Society of America,
2013, pp. 15538–52, doi:10.1364/OE.21.015538.
short: D. Schmid, T. Huang, S. Hazrat, R. Dirks, O. Hosten, S. Quint, D. Thian,
P. Kwiat, Optics Express 21 (2013) 15538–15552.
date_created: 2018-12-11T11:47:22Z
date_published: 2013-07-01T00:00:00Z
date_updated: 2021-01-12T08:05:12Z
day: '01'
doi: 10.1364/OE.21.015538
extern: 1
intvolume: ' 21'
issue: '13'
month: '07'
page: 15538 - 15552
publication: Optics Express
publication_status: published
publisher: Optical Society of America
publist_id: '7218'
quality_controlled: 0
status: public
title: Adjustable and robust methods for polarization-dependent focusing
type: journal_article
volume: 21
year: '2013'
...
---
_id: '580'
author:
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
citation:
ama: 'Hosten O. Quantum physics: How to catch a wave. Nature. 2011;474(7350):170-171.
doi:10.1038/474170a'
apa: 'Hosten, O. (2011). Quantum physics: How to catch a wave. Nature. Nature
Publishing Group. https://doi.org/10.1038/474170a'
chicago: 'Hosten, Onur. “Quantum Physics: How to Catch a Wave.” Nature. Nature
Publishing Group, 2011. https://doi.org/10.1038/474170a.'
ieee: 'O. Hosten, “Quantum physics: How to catch a wave,” Nature, vol. 474,
no. 7350. Nature Publishing Group, pp. 170–171, 2011.'
ista: 'Hosten O. 2011. Quantum physics: How to catch a wave. Nature. 474(7350),
170–171.'
mla: 'Hosten, Onur. “Quantum Physics: How to Catch a Wave.” Nature, vol.
474, no. 7350, Nature Publishing Group, 2011, pp. 170–71, doi:10.1038/474170a.'
short: O. Hosten, Nature 474 (2011) 170–171.
date_created: 2018-12-11T11:47:18Z
date_published: 2011-06-08T00:00:00Z
date_updated: 2021-01-12T08:03:34Z
day: '08'
doi: 10.1038/474170a
extern: 1
intvolume: ' 474'
issue: '7350'
month: '06'
page: 170 - 171
publication: Nature
publication_status: published
publisher: Nature Publishing Group
publist_id: '7224'
quality_controlled: 0
status: public
title: 'Quantum physics: How to catch a wave'
type: journal_article
volume: 474
year: '2011'
...
---
_id: '585'
abstract:
- lang: eng
text: |+
We present two independent schemes for the precise focusing of orthogonal polarizations of light at arbitrary relative locations. The first scheme uses a polarization Sagnac interferometer, the second a set of three birefringent elements.
alternative_title:
- Optics InfoBase Conference Papers
author:
- first_name: David
full_name: Schmid, David
last_name: Schmid
- first_name: Shiraz
full_name: Hazrat, Shiraz
last_name: Hazrat
- first_name: Radhika
full_name: Rangarajan, Radhika
last_name: Rangarajan
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Stephan
full_name: Quint, Stephan
last_name: Quint
- first_name: Paul
full_name: Kwiat, Paul G
last_name: Kwiat
citation:
ama: 'Schmid D, Hazrat S, Rangarajan R, Hosten O, Quint S, Kwiat P. Methods towards
achieving precise birefringent focusing. In: OSA; 2011. doi:10.1364/CLEO_AT.2011.JThB130'
apa: 'Schmid, D., Hazrat, S., Rangarajan, R., Hosten, O., Quint, S., & Kwiat,
P. (2011). Methods towards achieving precise birefringent focusing. Presented
at the QELS: Quantum Electronics and Laser Science, OSA. https://doi.org/10.1364/CLEO_AT.2011.JThB130'
chicago: Schmid, David, Shiraz Hazrat, Radhika Rangarajan, Onur Hosten, Stephan
Quint, and Paul Kwiat. “Methods towards Achieving Precise Birefringent Focusing.”
OSA, 2011. https://doi.org/10.1364/CLEO_AT.2011.JThB130.
ieee: 'D. Schmid, S. Hazrat, R. Rangarajan, O. Hosten, S. Quint, and P. Kwiat, “Methods
towards achieving precise birefringent focusing,” presented at the QELS: Quantum
Electronics and Laser Science, 2011.'
ista: 'Schmid D, Hazrat S, Rangarajan R, Hosten O, Quint S, Kwiat P. 2011. Methods
towards achieving precise birefringent focusing. QELS: Quantum Electronics and
Laser Science, Optics InfoBase Conference Papers, .'
mla: Schmid, David, et al. Methods towards Achieving Precise Birefringent Focusing.
OSA, 2011, doi:10.1364/CLEO_AT.2011.JThB130.
short: D. Schmid, S. Hazrat, R. Rangarajan, O. Hosten, S. Quint, P. Kwiat, in:,
OSA, 2011.
conference:
name: 'QELS: Quantum Electronics and Laser Science'
date_created: 2018-12-11T11:47:20Z
date_published: 2011-01-01T00:00:00Z
date_updated: 2021-01-12T08:03:44Z
day: '01'
doi: 10.1364/CLEO_AT.2011.JThB130
extern: 1
month: '01'
publication_status: published
publisher: OSA
publist_id: '7220'
quality_controlled: 0
status: public
title: Methods towards achieving precise birefringent focusing
type: conference
year: '2011'
...
...
---
_id: '586'
abstract:
- lang: eng
text: We demonstrate a Raman laser using cold Rb87 atoms as the gain medium in a
high-finesse optical cavity. We observe robust continuous wave lasing in the atypical
regime where single atoms can considerably affect the cavity field. Consequently,
we discover unusual lasing threshold behavior in the system causing jumps in lasing
power, and propose a model to explain the effect. We also measure the intermode
laser linewidth, and observe values as low as 80Hz. The tunable gain properties
of this laser suggest multiple directions for future research.
author:
- first_name: Geert
full_name: Vrijsen, Geert
last_name: Vrijsen
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Jongmin
full_name: Lee, Jongmin
last_name: Lee
- first_name: Simon
full_name: Bernon, Simon
last_name: Bernon
- first_name: Mark
full_name: Kasevich, Mark A
last_name: Kasevich
citation:
ama: Vrijsen G, Hosten O, Lee J, Bernon S, Kasevich M. Raman lasing with a cold
atom gain medium in a high-finesse optical cavity. Physical Review Letters.
2011;107(6). doi:10.1103/PhysRevLett.107.063904
apa: Vrijsen, G., Hosten, O., Lee, J., Bernon, S., & Kasevich, M. (2011). Raman
lasing with a cold atom gain medium in a high-finesse optical cavity. Physical
Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.107.063904
chicago: Vrijsen, Geert, Onur Hosten, Jongmin Lee, Simon Bernon, and Mark Kasevich.
“Raman Lasing with a Cold Atom Gain Medium in a High-Finesse Optical Cavity.”
Physical Review Letters. American Physical Society, 2011. https://doi.org/10.1103/PhysRevLett.107.063904.
ieee: G. Vrijsen, O. Hosten, J. Lee, S. Bernon, and M. Kasevich, “Raman lasing with
a cold atom gain medium in a high-finesse optical cavity,” Physical Review
Letters, vol. 107, no. 6. American Physical Society, 2011.
ista: Vrijsen G, Hosten O, Lee J, Bernon S, Kasevich M. 2011. Raman lasing with
a cold atom gain medium in a high-finesse optical cavity. Physical Review Letters.
107(6).
mla: Vrijsen, Geert, et al. “Raman Lasing with a Cold Atom Gain Medium in a High-Finesse
Optical Cavity.” Physical Review Letters, vol. 107, no. 6, American Physical
Society, 2011, doi:10.1103/PhysRevLett.107.063904.
short: G. Vrijsen, O. Hosten, J. Lee, S. Bernon, M. Kasevich, Physical Review Letters
107 (2011).
date_created: 2018-12-11T11:47:20Z
date_published: 2011-08-04T00:00:00Z
date_updated: 2021-01-12T08:05:05Z
day: '04'
doi: 10.1103/PhysRevLett.107.063904
extern: 1
intvolume: ' 107'
issue: '6'
month: '08'
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
publist_id: '7223'
quality_controlled: 0
status: public
title: Raman lasing with a cold atom gain medium in a high-finesse optical cavity
type: journal_article
volume: 107
year: '2011'
...
---
_id: '581'
abstract:
- lang: eng
text: We have detected a spin-dependent displacement perpendicular to the refractive
index gradient for photons passing through an air-glass interface. The effect
is the photonic version of the spin Hall effect in electronic systems, indicating
the universality of the effect for particles of different nature. Treating the
effect as a weak measurement of the spin projection of the photons, we used a
preselection and postselection technique on the spin state to enhance the original
displacement by nearly four orders of magnitude, attaining sensitivity to displacements
of ∼1 angstrom. The spin Hall effect can be used for manipulating photonic angular
momentum states, and the measurement technique holds promise for precision metrology.
author:
- first_name: Onur
full_name: Onur Hosten
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
- first_name: Paul
full_name: Kwiat, Paul
last_name: Kwiat
citation:
ama: Hosten O, Kwiat P. Observation of the spin hall effect of light via weak measurements.
Science. 2008;319(5864):787-790. doi:10.1126/science.1152697
apa: Hosten, O., & Kwiat, P. (2008). Observation of the spin hall effect of
light via weak measurements. Science. American Association for the Advancement
of Science. https://doi.org/10.1126/science.1152697
chicago: Hosten, Onur, and Paul Kwiat. “Observation of the Spin Hall Effect of Light
via Weak Measurements.” Science. American Association for the Advancement
of Science, 2008. https://doi.org/10.1126/science.1152697.
ieee: O. Hosten and P. Kwiat, “Observation of the spin hall effect of light via
weak measurements,” Science, vol. 319, no. 5864. American Association for
the Advancement of Science, pp. 787–790, 2008.
ista: Hosten O, Kwiat P. 2008. Observation of the spin hall effect of light via
weak measurements. Science. 319(5864), 787–790.
mla: Hosten, Onur, and Paul Kwiat. “Observation of the Spin Hall Effect of Light
via Weak Measurements.” Science, vol. 319, no. 5864, American Association
for the Advancement of Science, 2008, pp. 787–90, doi:10.1126/science.1152697.
short: O. Hosten, P. Kwiat, Science 319 (2008) 787–790.
date_created: 2018-12-11T11:47:19Z
date_published: 2008-02-08T00:00:00Z
date_updated: 2021-01-12T08:03:38Z
day: '08'
doi: 10.1126/science.1152697
extern: 1
intvolume: ' 319'
issue: '5864'
month: '02'
page: 787 - 790
publication: Science
publication_status: published
publisher: American Association for the Advancement of Science
publist_id: '7226'
quality_controlled: 0
status: public
title: Observation of the spin hall effect of light via weak measurements
type: journal_article
volume: 319
year: '2008'
...