---
_id: '14845'
abstract:
- lang: eng
text: We study a linear rotor in a bosonic bath within the angulon formalism. Our
focus is on systems where isotropic or anisotropic impurity-boson interactions
support a shallow bound state. To study the fate of the angulon in the vicinity
of bound-state formation, we formulate a beyond-linear-coupling angulon Hamiltonian.
First, we use it to study attractive, spherically symmetric impurity-boson interactions
for which the linear rotor can be mapped onto a static impurity. The well-known
polaron formalism provides an adequate description in this limit. Second, we consider
anisotropic potentials, and show that the presence of a shallow bound state with
pronounced anisotropic character leads to a many-body instability that washes
out the angulon dynamics.
acknowledgement: "We would like to thank G. Bighin, I. Cherepanov, E. Paerschke, and
E. Yakaboylu for insightful discussions on a wide range of topics. This work has
been supported by the European Research Council (ERC) Starting Grant No. 801770
(ANGULON). A.G. and A.G.V. acknowledge support from the European Union’s Horizon
2020 research and innovation\r\nprogram under the Marie Skłodowska-Curie Grant Agreement
No. 754411. Numerical calculations were performed on the Euler cluster managed by
the HPC team at ETH Zurich.\r\nR.S. acknowledges support by the Deutsche Forschungsgemeinschaft
under Germany’s Excellence Strategy Grant No. EXC 2181/1-390900948 (the Heidelberg
STRUCTURES Excellence Cluster). T.D. acknowledges support from the Isaac Newton
Studentship and the Science and Technology Facilities Council under Grant No. ST/V50659X/1."
article_number: '014102'
article_processing_charge: No
article_type: original
author:
- first_name: Tibor
full_name: Dome, Tibor
id: 7e3293e2-b9dc-11ee-97a9-cd73400f6994
last_name: Dome
orcid: 0000-0003-2586-3702
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Laleh
full_name: Safari, Laleh
id: 3C325E5E-F248-11E8-B48F-1D18A9856A87
last_name: Safari
- first_name: Richard
full_name: Schmidt, Richard
last_name: Schmidt
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Dome T, Volosniev A, Ghazaryan A, Safari L, Schmidt R, Lemeshko M. Linear rotor
in an ideal Bose gas near the threshold for binding. Physical Review B.
2024;109(1). doi:10.1103/PhysRevB.109.014102
apa: Dome, T., Volosniev, A., Ghazaryan, A., Safari, L., Schmidt, R., & Lemeshko,
M. (2024). Linear rotor in an ideal Bose gas near the threshold for binding. Physical
Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.109.014102
chicago: Dome, Tibor, Artem Volosniev, Areg Ghazaryan, Laleh Safari, Richard Schmidt,
and Mikhail Lemeshko. “Linear Rotor in an Ideal Bose Gas near the Threshold for
Binding.” Physical Review B. American Physical Society, 2024. https://doi.org/10.1103/PhysRevB.109.014102.
ieee: T. Dome, A. Volosniev, A. Ghazaryan, L. Safari, R. Schmidt, and M. Lemeshko,
“Linear rotor in an ideal Bose gas near the threshold for binding,” Physical
Review B, vol. 109, no. 1. American Physical Society, 2024.
ista: Dome T, Volosniev A, Ghazaryan A, Safari L, Schmidt R, Lemeshko M. 2024. Linear
rotor in an ideal Bose gas near the threshold for binding. Physical Review B.
109(1), 014102.
mla: Dome, Tibor, et al. “Linear Rotor in an Ideal Bose Gas near the Threshold for
Binding.” Physical Review B, vol. 109, no. 1, 014102, American Physical
Society, 2024, doi:10.1103/PhysRevB.109.014102.
short: T. Dome, A. Volosniev, A. Ghazaryan, L. Safari, R. Schmidt, M. Lemeshko,
Physical Review B 109 (2024).
date_created: 2024-01-21T23:00:57Z
date_published: 2024-01-01T00:00:00Z
date_updated: 2024-01-23T10:51:09Z
day: '01'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.109.014102
ec_funded: 1
intvolume: ' 109'
issue: '1'
language:
- iso: eng
month: '01'
oa_version: None
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Linear rotor in an ideal Bose gas near the threshold for binding
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 109
year: '2024'
...
---
_id: '294'
abstract:
- lang: eng
text: We developed a method to calculate two-photon processes in quantum mechanics
that replaces the infinite summation over the intermediate states by a perturbation
expansion. This latter consists of a series of commutators that involve position,
momentum, and Hamiltonian quantum operators. We analyzed several single- and many-particle
cases for which a closed-form solution to the perturbation expansion exists, as
well as more complicated cases for which a solution is found by convergence. Throughout
the article, Rayleigh and Raman scattering are taken as examples of two-photon
processes. The present method provides a clear distinction between the Thomson
scattering, regarded as classical scattering, and quantum contributions. Such
a distinction lets us derive general results concerning light scattering. Finally,
possible extensions to the developed formalism are discussed.
article_processing_charge: No
arxiv: 1
author:
- first_name: Filippo
full_name: Fratini, Filippo
last_name: Fratini
- first_name: Laleh
full_name: Safari, Laleh
id: 3C325E5E-F248-11E8-B48F-1D18A9856A87
last_name: Safari
- first_name: Pedro
full_name: Amaro, Pedro
last_name: Amaro
- first_name: José
full_name: Santos, José
last_name: Santos
citation:
ama: Fratini F, Safari L, Amaro P, Santos J. Two-photon processes based on quantum
commutators. Physical Review A - Atomic, Molecular, and Optical Physics.
2018;97(4). doi:10.1103/PhysRevA.97.043842
apa: Fratini, F., Safari, L., Amaro, P., & Santos, J. (2018). Two-photon processes
based on quantum commutators. Physical Review A - Atomic, Molecular, and Optical
Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.97.043842
chicago: Fratini, Filippo, Laleh Safari, Pedro Amaro, and José Santos. “Two-Photon
Processes Based on Quantum Commutators.” Physical Review A - Atomic, Molecular,
and Optical Physics. American Physical Society, 2018. https://doi.org/10.1103/PhysRevA.97.043842.
ieee: F. Fratini, L. Safari, P. Amaro, and J. Santos, “Two-photon processes based
on quantum commutators,” Physical Review A - Atomic, Molecular, and Optical
Physics, vol. 97, no. 4. American Physical Society, 2018.
ista: Fratini F, Safari L, Amaro P, Santos J. 2018. Two-photon processes based on
quantum commutators. Physical Review A - Atomic, Molecular, and Optical Physics.
97(4).
mla: Fratini, Filippo, et al. “Two-Photon Processes Based on Quantum Commutators.”
Physical Review A - Atomic, Molecular, and Optical Physics, vol. 97, no.
4, American Physical Society, 2018, doi:10.1103/PhysRevA.97.043842.
short: F. Fratini, L. Safari, P. Amaro, J. Santos, Physical Review A - Atomic, Molecular,
and Optical Physics 97 (2018).
date_created: 2018-12-11T11:45:40Z
date_published: 2018-04-18T00:00:00Z
date_updated: 2023-09-19T10:17:56Z
day: '18'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.97.043842
ec_funded: 1
external_id:
arxiv:
- '1801.06892'
isi:
- '000430296800008'
intvolume: ' 97'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1801.06892
month: '04'
oa: 1
oa_version: Submitted Version
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Physical Review A - Atomic, Molecular, and Optical Physics
publication_status: published
publisher: American Physical Society
publist_id: '7587'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Two-photon processes based on quantum commutators
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 97
year: '2018'
...
---
_id: '427'
abstract:
- lang: eng
text: We investigate the quantum interference induced shifts between energetically
close states in highly charged ions, with the energy structure being observed
by laser spectroscopy. In this work, we focus on hyperfine states of lithiumlike
heavy-Z isotopes and quantify how much quantum interference changes the observed
transition frequencies. The process of photon excitation and subsequent photon
decay for the transition 2s→2p→2s is implemented with fully relativistic and full-multipole
frameworks, which are relevant for such relativistic atomic systems. We consider
the isotopes Pb79+207 and Bi80+209 due to experimental interest, as well as other
examples of isotopes with lower Z, namely Pr56+141 and Ho64+165. We conclude that
quantum interference can induce shifts up to 11% of the linewidth in the measurable
resonances of the considered isotopes, if interference between resonances is neglected.
The inclusion of relativity decreases the cross section by 35%, mainly due to
the complete retardation form of the electric dipole multipole. However, the contribution
of the next higher multipoles (e.g., magnetic quadrupole) to the cross section
is negligible. This makes the contribution of relativity and higher-order multipoles
to the quantum interference induced shifts a minor effect, even for heavy-Z elements.
acknowledgement: "This work was funded by the Portuguese Fundação para a Ciência e
a Tecnologia (FCT/MCTES/PIDDAC) under Grant No. UID/FIS/04559/2013 (LIBPhys). P.A.
acknowledges the support of the FCT, under Contract No. SFRH/BPD/92329/2013. L.S.
acknowledges financial support from the People Programme (Marie Curie Actions) of
the European Union's Seventh Framework Programme (FP7/2007-2013) under REA Grant
Agreement No. (291734). Laboratoire Kastler Brossel (LKB) is “Unité Mixte de Recherche
de Sorbonne Université, de ENS-PSL Research University, du Collège de France et
du CNRS No. 8552.” APPENDIX:\r\n"
article_number: '022510'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Pedro
full_name: Amaro, Pedro
last_name: Amaro
- first_name: Ulisses
full_name: Loureiro, Ulisses
last_name: Loureiro
- first_name: Laleh
full_name: Safari, Laleh
id: 3C325E5E-F248-11E8-B48F-1D18A9856A87
last_name: Safari
- first_name: Filippo
full_name: Fratini, Filippo
last_name: Fratini
- first_name: Paul
full_name: Indelicato, Paul
last_name: Indelicato
- first_name: Thomas
full_name: Stöhlker, Thomas
last_name: Stöhlker
- first_name: José
full_name: Santos, José
last_name: Santos
citation:
ama: Amaro P, Loureiro U, Safari L, et al. Quantum interference in laser spectroscopy
of highly charged lithiumlike ions. Physical Review A - Atomic, Molecular,
and Optical Physics. 2018;97(2). doi:10.1103/PhysRevA.97.022510
apa: Amaro, P., Loureiro, U., Safari, L., Fratini, F., Indelicato, P., Stöhlker,
T., & Santos, J. (2018). Quantum interference in laser spectroscopy of highly
charged lithiumlike ions. Physical Review A - Atomic, Molecular, and Optical
Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.97.022510
chicago: Amaro, Pedro, Ulisses Loureiro, Laleh Safari, Filippo Fratini, Paul Indelicato,
Thomas Stöhlker, and José Santos. “Quantum Interference in Laser Spectroscopy
of Highly Charged Lithiumlike Ions.” Physical Review A - Atomic, Molecular,
and Optical Physics. American Physical Society, 2018. https://doi.org/10.1103/PhysRevA.97.022510.
ieee: P. Amaro et al., “Quantum interference in laser spectroscopy of highly
charged lithiumlike ions,” Physical Review A - Atomic, Molecular, and Optical
Physics, vol. 97, no. 2. American Physical Society, 2018.
ista: Amaro P, Loureiro U, Safari L, Fratini F, Indelicato P, Stöhlker T, Santos
J. 2018. Quantum interference in laser spectroscopy of highly charged lithiumlike
ions. Physical Review A - Atomic, Molecular, and Optical Physics. 97(2), 022510.
mla: Amaro, Pedro, et al. “Quantum Interference in Laser Spectroscopy of Highly
Charged Lithiumlike Ions.” Physical Review A - Atomic, Molecular, and Optical
Physics, vol. 97, no. 2, 022510, American Physical Society, 2018, doi:10.1103/PhysRevA.97.022510.
short: P. Amaro, U. Loureiro, L. Safari, F. Fratini, P. Indelicato, T. Stöhlker,
J. Santos, Physical Review A - Atomic, Molecular, and Optical Physics 97 (2018).
date_created: 2018-12-11T11:46:25Z
date_published: 2018-02-21T00:00:00Z
date_updated: 2023-09-15T12:09:35Z
day: '21'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.97.022510
ec_funded: 1
external_id:
arxiv:
- '1802.07920'
isi:
- '000425601000004'
intvolume: ' 97'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1802.07920
month: '02'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: ' Physical Review A - Atomic, Molecular, and Optical Physics'
publication_status: published
publisher: American Physical Society
publist_id: '7396'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantum interference in laser spectroscopy of highly charged lithiumlike ions
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 97
year: '2018'
...
---
_id: '1496'
abstract:
- lang: eng
text: The two-photon 1s2 2s 2p 3P0 1s22s2 1S0 transition in berylliumlike ions is
theoretically investigated within a fully relativistic framework and a second-order
perturbation theory. We focus our analysis on how electron correlation, as well
as the negative-energy spectrum, can affect the forbidden E1M1 decay rate. For
this purpose, we include the electronic correlation via an effective local potential
and within a single configuration-state model. Due to its experimental interest,
evaluations of decay rates are performed for berylliumlike xenon and uranium.
We find that the negative-energy contribution can be neglected at the present
level of accuracy in the evaluation of the decay rate. On the other hand, if contributions
of electronic correlation are not carefully taken into account, it may change
the lifetime of the metastable state by up to 20%. By performing a full-relativistic
jj-coupling calculation, we found a decrease of the decay rate by two orders of
magnitude compared to non-relativistic LS-coupling calculations, for the selected
heavy ions.
acknowledgement: 'This research was supported in part by FCT, Portugal, through
Project No. PTDC/FIS/117606/2010, financed by the European Community Fund FEDER through the COMPETE. '
article_number: '032502'
author:
- first_name: Pedro
full_name: Amaro, Pedro
last_name: Amaro
- first_name: Filippo
full_name: Fratini, Filippo
last_name: Fratini
- first_name: Laleh
full_name: Safari, Laleh
id: 3C325E5E-F248-11E8-B48F-1D18A9856A87
last_name: Safari
- first_name: Jorge
full_name: Machado, Jorge
last_name: Machado
- first_name: Mauro
full_name: Guerra, Mauro
last_name: Guerra
- first_name: Paul
full_name: Indelicato, Paul
last_name: Indelicato
- first_name: José
full_name: Santos, José
last_name: Santos
citation:
ama: Amaro P, Fratini F, Safari L, et al. Relativistic evaluation of the two-photon
decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential
model. Physical Review A - Atomic, Molecular, and Optical Physics. 2016;93(3).
doi:10.1103/PhysRevA.93.032502
apa: Amaro, P., Fratini, F., Safari, L., Machado, J., Guerra, M., Indelicato, P.,
& Santos, J. (2016). Relativistic evaluation of the two-photon decay of the
metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential
model. Physical Review A - Atomic, Molecular, and Optical Physics. American
Physical Society. https://doi.org/10.1103/PhysRevA.93.032502
chicago: Amaro, Pedro, Filippo Fratini, Laleh Safari, Jorge Machado, Mauro Guerra,
Paul Indelicato, and José Santos. “Relativistic Evaluation of the Two-Photon Decay
of the Metastable 1s22s2p3P0 State in Berylliumlike Ions with an Effective-Potential
Model.” Physical Review A - Atomic, Molecular, and Optical Physics. American
Physical Society, 2016. https://doi.org/10.1103/PhysRevA.93.032502.
ieee: P. Amaro et al., “Relativistic evaluation of the two-photon decay of
the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential
model,” Physical Review A - Atomic, Molecular, and Optical Physics, vol.
93, no. 3. American Physical Society, 2016.
ista: Amaro P, Fratini F, Safari L, Machado J, Guerra M, Indelicato P, Santos J.
2016. Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0
state in berylliumlike ions with an effective-potential model. Physical Review
A - Atomic, Molecular, and Optical Physics. 93(3), 032502.
mla: Amaro, Pedro, et al. “Relativistic Evaluation of the Two-Photon Decay of the
Metastable 1s22s2p3P0 State in Berylliumlike Ions with an Effective-Potential
Model.” Physical Review A - Atomic, Molecular, and Optical Physics, vol.
93, no. 3, 032502, American Physical Society, 2016, doi:10.1103/PhysRevA.93.032502.
short: P. Amaro, F. Fratini, L. Safari, J. Machado, M. Guerra, P. Indelicato, J.
Santos, Physical Review A - Atomic, Molecular, and Optical Physics 93 (2016).
date_created: 2018-12-11T11:52:21Z
date_published: 2016-03-07T00:00:00Z
date_updated: 2021-01-12T06:51:09Z
day: '07'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.93.032502
ec_funded: 1
intvolume: ' 93'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1508.06169
month: '03'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Physical Review A - Atomic, Molecular, and Optical Physics
publication_status: published
publisher: American Physical Society
publist_id: '5683'
quality_controlled: '1'
scopus_import: 1
status: public
title: Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0
state in berylliumlike ions with an effective-potential model
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 93
year: '2016'
...
---
_id: '1693'
abstract:
- lang: eng
text: Quantum interference between energetically close states is theoretically investigated,
with the state structure being observed via laser spectroscopy. In this work,
we focus on hyperfine states of selected hydrogenic muonic isotopes, and on how
quantum interference affects the measured Lamb shift. The process of photon excitation
and subsequent photon decay is implemented within the framework of nonrelativistic
second-order perturbation theory. Due to its experimental interest, calculations
are performed for muonic hydrogen, deuterium, and helium-3. We restrict our analysis
to the case of photon scattering by incident linear polarized photons and the
polarization of the scattered photons not being observed. We conclude that while
quantum interference effects can be safely neglected in muonic hydrogen and helium-3,
in the case of muonic deuterium there are resonances with close proximity, where
quantum interference effects can induce shifts up to a few percent of the linewidth,
assuming a pointlike detector. However, by taking into account the geometry of
the setup used by the CREMA collaboration, this effect is reduced to less than
0.2% of the linewidth in all possible cases, which makes it irrelevant at the
present level of accuracy. © 2015 American Physical Society.
article_number: '022514'
author:
- first_name: Pedro
full_name: Amaro, Pedro
last_name: Amaro
- first_name: Beatrice
full_name: Franke, Beatrice
last_name: Franke
- first_name: Julian
full_name: Krauth, Julian
last_name: Krauth
- first_name: Marc
full_name: Diepold, Marc
last_name: Diepold
- first_name: Filippo
full_name: Fratini, Filippo
last_name: Fratini
- first_name: Laleh
full_name: Safari, Laleh
id: 3C325E5E-F248-11E8-B48F-1D18A9856A87
last_name: Safari
- first_name: Jorge
full_name: Machado, Jorge
last_name: Machado
- first_name: Aldo
full_name: Antognini, Aldo
last_name: Antognini
- first_name: Franz
full_name: Kottmann, Franz
last_name: Kottmann
- first_name: Paul
full_name: Indelicato, Paul
last_name: Indelicato
- first_name: Randolf
full_name: Pohl, Randolf
last_name: Pohl
- first_name: José
full_name: Santos, José
last_name: Santos
citation:
ama: Amaro P, Franke B, Krauth J, et al. Quantum interference effects in laser spectroscopy
of muonic hydrogen, deuterium, and helium-3. Physical Review A. 2015;92(2).
doi:10.1103/PhysRevA.92.022514
apa: Amaro, P., Franke, B., Krauth, J., Diepold, M., Fratini, F., Safari, L., …
Santos, J. (2015). Quantum interference effects in laser spectroscopy of muonic
hydrogen, deuterium, and helium-3. Physical Review A. American Physical
Society. https://doi.org/10.1103/PhysRevA.92.022514
chicago: Amaro, Pedro, Beatrice Franke, Julian Krauth, Marc Diepold, Filippo Fratini,
Laleh Safari, Jorge Machado, et al. “Quantum Interference Effects in Laser Spectroscopy
of Muonic Hydrogen, Deuterium, and Helium-3.” Physical Review A. American
Physical Society, 2015. https://doi.org/10.1103/PhysRevA.92.022514.
ieee: P. Amaro et al., “Quantum interference effects in laser spectroscopy
of muonic hydrogen, deuterium, and helium-3,” Physical Review A, vol. 92,
no. 2. American Physical Society, 2015.
ista: Amaro P, Franke B, Krauth J, Diepold M, Fratini F, Safari L, Machado J, Antognini
A, Kottmann F, Indelicato P, Pohl R, Santos J. 2015. Quantum interference effects
in laser spectroscopy of muonic hydrogen, deuterium, and helium-3. Physical Review
A. 92(2), 022514.
mla: Amaro, Pedro, et al. “Quantum Interference Effects in Laser Spectroscopy of
Muonic Hydrogen, Deuterium, and Helium-3.” Physical Review A, vol. 92,
no. 2, 022514, American Physical Society, 2015, doi:10.1103/PhysRevA.92.022514.
short: P. Amaro, B. Franke, J. Krauth, M. Diepold, F. Fratini, L. Safari, J. Machado,
A. Antognini, F. Kottmann, P. Indelicato, R. Pohl, J. Santos, Physical Review
A 92 (2015).
date_created: 2018-12-11T11:53:30Z
date_published: 2015-08-28T00:00:00Z
date_updated: 2021-01-12T06:52:34Z
day: '28'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.92.022514
ec_funded: 1
intvolume: ' 92'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1506.02734
month: '08'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Physical Review A
publication_status: published
publisher: American Physical Society
publist_id: '5451'
quality_controlled: '1'
scopus_import: 1
status: public
title: Quantum interference effects in laser spectroscopy of muonic hydrogen, deuterium,
and helium-3
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 92
year: '2015'
...
---
_id: '1811'
abstract:
- lang: eng
text: Atomic form factors are widely used for the characterization of targets and
specimens, from crystallography to biology. By using recent mathematical results,
here we derive an analytical expression for the atomic form factor within the
independent particle model constructed from nonrelativistic screened hydrogenic
wave functions. The range of validity of this analytical expression is checked
by comparing the analytically obtained form factors with the ones obtained within
the Hartee-Fock method. As an example, we apply our analytical expression for
the atomic form factor to evaluate the differential cross section for Rayleigh
scattering off neutral atoms.
acknowledgement: The research leading to these results has received funding from the
People Programme (Marie Curie Actions) of the European Union’s Seventh Framework
Programme (FP7/2007-2013) under REA grant agreement n◦ [291734]. F.F. acknowledges
support by Fundação de Amparo à Pesquisa do estado de Minas Gerais (FAPEMIG), by
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), and by the
Austrian Science Fund (FWF) through the START Grant No. Y 591-N16.
article_number: '052105'
author:
- first_name: Laleh
full_name: Safari, Laleh
id: 3C325E5E-F248-11E8-B48F-1D18A9856A87
last_name: Safari
- first_name: José
full_name: Santos, José
last_name: Santos
- first_name: Pedro
full_name: Amaro, Pedro
last_name: Amaro
- first_name: Kari
full_name: Jänkälä, Kari
last_name: Jänkälä
- first_name: Filippo
full_name: Fratini, Filippo
last_name: Fratini
citation:
ama: 'Safari L, Santos J, Amaro P, Jänkälä K, Fratini F. Analytical evaluation of
atomic form factors: Application to Rayleigh scattering. Journal of Mathematical
Physics. 2015;56(5). doi:10.1063/1.4921227'
apa: 'Safari, L., Santos, J., Amaro, P., Jänkälä, K., & Fratini, F. (2015).
Analytical evaluation of atomic form factors: Application to Rayleigh scattering.
Journal of Mathematical Physics. American Institute of Physics. https://doi.org/10.1063/1.4921227'
chicago: 'Safari, Laleh, José Santos, Pedro Amaro, Kari Jänkälä, and Filippo Fratini.
“Analytical Evaluation of Atomic Form Factors: Application to Rayleigh Scattering.”
Journal of Mathematical Physics. American Institute of Physics, 2015. https://doi.org/10.1063/1.4921227.'
ieee: 'L. Safari, J. Santos, P. Amaro, K. Jänkälä, and F. Fratini, “Analytical evaluation
of atomic form factors: Application to Rayleigh scattering,” Journal of Mathematical
Physics, vol. 56, no. 5. American Institute of Physics, 2015.'
ista: 'Safari L, Santos J, Amaro P, Jänkälä K, Fratini F. 2015. Analytical evaluation
of atomic form factors: Application to Rayleigh scattering. Journal of Mathematical
Physics. 56(5), 052105.'
mla: 'Safari, Laleh, et al. “Analytical Evaluation of Atomic Form Factors: Application
to Rayleigh Scattering.” Journal of Mathematical Physics, vol. 56, no.
5, 052105, American Institute of Physics, 2015, doi:10.1063/1.4921227.'
short: L. Safari, J. Santos, P. Amaro, K. Jänkälä, F. Fratini, Journal of Mathematical
Physics 56 (2015).
date_created: 2018-12-11T11:54:08Z
date_published: 2015-05-20T00:00:00Z
date_updated: 2021-01-12T06:53:21Z
day: '20'
department:
- _id: MiLe
doi: 10.1063/1.4921227
ec_funded: 1
intvolume: ' 56'
issue: '5'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1409.0110
month: '05'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Journal of Mathematical Physics
publication_status: published
publisher: American Institute of Physics
publist_id: '5295'
scopus_import: 1
status: public
title: 'Analytical evaluation of atomic form factors: Application to Rayleigh scattering'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 56
year: '2015'
...
---
_id: '1587'
abstract:
- lang: eng
text: We investigate the quantum interference shifts between energetically close
states, where the state structure is observed by laser spectroscopy. We report
a compact and analytical expression that models the quantum interference induced
shift for any admixture of circular polarization of the incident laser and angle
of observation. An experimental scenario free of quantum interference can thus
be predicted with this formula. Although this study is exemplified here for muonic
deuterium, it can be applied to any other laser spectroscopy measurement of ns-n′p
frequencies of a nonrelativistic atomic system, via an ns→n′p→n′′s scheme.
article_number: '062506'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Pedro
full_name: Amaro, Pedro
last_name: Amaro
- first_name: Filippo
full_name: Fratini, Filippo
last_name: Fratini
- first_name: Laleh
full_name: Safari, Laleh
id: 3C325E5E-F248-11E8-B48F-1D18A9856A87
last_name: Safari
- first_name: Aldo
full_name: Antognini, Aldo
last_name: Antognini
- first_name: Paul
full_name: Indelicato, Paul
last_name: Indelicato
- first_name: Randolf
full_name: Pohl, Randolf
last_name: Pohl
- first_name: José
full_name: Santos, José
last_name: Santos
citation:
ama: Amaro P, Fratini F, Safari L, et al. Quantum interference shifts in laser spectroscopy
with elliptical polarization. Physical Review A - Atomic, Molecular, and Optical
Physics. 2015;92(6). doi:10.1103/PhysRevA.92.062506
apa: Amaro, P., Fratini, F., Safari, L., Antognini, A., Indelicato, P., Pohl, R.,
& Santos, J. (2015). Quantum interference shifts in laser spectroscopy with
elliptical polarization. Physical Review A - Atomic, Molecular, and Optical
Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.92.062506
chicago: Amaro, Pedro, Filippo Fratini, Laleh Safari, Aldo Antognini, Paul Indelicato,
Randolf Pohl, and José Santos. “Quantum Interference Shifts in Laser Spectroscopy
with Elliptical Polarization.” Physical Review A - Atomic, Molecular, and Optical
Physics. American Physical Society, 2015. https://doi.org/10.1103/PhysRevA.92.062506.
ieee: P. Amaro et al., “Quantum interference shifts in laser spectroscopy
with elliptical polarization,” Physical Review A - Atomic, Molecular, and Optical
Physics, vol. 92, no. 6. American Physical Society, 2015.
ista: Amaro P, Fratini F, Safari L, Antognini A, Indelicato P, Pohl R, Santos J.
2015. Quantum interference shifts in laser spectroscopy with elliptical polarization.
Physical Review A - Atomic, Molecular, and Optical Physics. 92(6), 062506.
mla: Amaro, Pedro, et al. “Quantum Interference Shifts in Laser Spectroscopy with
Elliptical Polarization.” Physical Review A - Atomic, Molecular, and Optical
Physics, vol. 92, no. 6, 062506, American Physical Society, 2015, doi:10.1103/PhysRevA.92.062506.
short: P. Amaro, F. Fratini, L. Safari, A. Antognini, P. Indelicato, R. Pohl, J.
Santos, Physical Review A - Atomic, Molecular, and Optical Physics 92 (2015).
date_created: 2018-12-11T11:52:53Z
date_published: 2015-12-31T00:00:00Z
date_updated: 2021-01-12T06:51:47Z
day: '31'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.92.062506
ec_funded: 1
external_id:
arxiv:
- '1511.03585'
intvolume: ' 92'
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1511.03585
month: '12'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Physical Review A - Atomic, Molecular, and Optical Physics
publication_status: published
publisher: American Physical Society
publist_id: '5584'
quality_controlled: '1'
scopus_import: 1
status: public
title: Quantum interference shifts in laser spectroscopy with elliptical polarization
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 92
year: '2015'
...
---
_id: '1995'
abstract:
- lang: eng
text: 'Optical transport represents a natural route towards fast communications,
and it is currently used in large scale data transfer. The progressive miniaturization
of devices for information processing calls for the microscopic tailoring of light
transport and confinement at length scales appropriate for upcoming technologies.
With this goal in mind, we present a theoretical analysis of a one-dimensional
Fabry-Perot interferometer built with two highly saturable nonlinear mirrors:
a pair of two-level systems. Our approach captures nonlinear and nonreciprocal
effects of light transport that were not reported previously. Remarkably, we show
that such an elementary device can operate as a microscopic integrated optical
rectifier.'
article_number: '243601'
author:
- first_name: Filippo
full_name: Fratini, Filippo
last_name: Fratini
- first_name: Eduardo
full_name: Mascarenhas, Eduardo
last_name: Mascarenhas
- first_name: Laleh
full_name: Safari, Laleh
id: 3C325E5E-F248-11E8-B48F-1D18A9856A87
last_name: Safari
- first_name: Jean
full_name: Poizat, Jean
last_name: Poizat
- first_name: Daniel
full_name: Valente, Daniel
last_name: Valente
- first_name: Alexia
full_name: Auffèves, Alexia
last_name: Auffèves
- first_name: Dario
full_name: Gerace, Dario
last_name: Gerace
- first_name: Marcelo
full_name: Santos, Marcelo
last_name: Santos
citation:
ama: 'Fratini F, Mascarenhas E, Safari L, et al. Fabry-Perot interferometer with
quantum mirrors: Nonlinear light transport and rectification. Physical Review
Letters. 2014;113(24). doi:10.1103/PhysRevLett.113.243601'
apa: 'Fratini, F., Mascarenhas, E., Safari, L., Poizat, J., Valente, D., Auffèves,
A., … Santos, M. (2014). Fabry-Perot interferometer with quantum mirrors: Nonlinear
light transport and rectification. Physical Review Letters. American Physical
Society. https://doi.org/10.1103/PhysRevLett.113.243601'
chicago: 'Fratini, Filippo, Eduardo Mascarenhas, Laleh Safari, Jean Poizat, Daniel
Valente, Alexia Auffèves, Dario Gerace, and Marcelo Santos. “Fabry-Perot Interferometer
with Quantum Mirrors: Nonlinear Light Transport and Rectification.” Physical
Review Letters. American Physical Society, 2014. https://doi.org/10.1103/PhysRevLett.113.243601.'
ieee: 'F. Fratini et al., “Fabry-Perot interferometer with quantum mirrors:
Nonlinear light transport and rectification,” Physical Review Letters,
vol. 113, no. 24. American Physical Society, 2014.'
ista: 'Fratini F, Mascarenhas E, Safari L, Poizat J, Valente D, Auffèves A, Gerace
D, Santos M. 2014. Fabry-Perot interferometer with quantum mirrors: Nonlinear
light transport and rectification. Physical Review Letters. 113(24), 243601.'
mla: 'Fratini, Filippo, et al. “Fabry-Perot Interferometer with Quantum Mirrors:
Nonlinear Light Transport and Rectification.” Physical Review Letters,
vol. 113, no. 24, 243601, American Physical Society, 2014, doi:10.1103/PhysRevLett.113.243601.'
short: F. Fratini, E. Mascarenhas, L. Safari, J. Poizat, D. Valente, A. Auffèves,
D. Gerace, M. Santos, Physical Review Letters 113 (2014).
date_created: 2018-12-11T11:55:06Z
date_published: 2014-12-08T00:00:00Z
date_updated: 2021-01-12T06:54:34Z
day: '08'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.113.243601
ec_funded: 1
intvolume: ' 113'
issue: '24'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1410.5972
month: '12'
oa: 1
oa_version: Submitted Version
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
publist_id: '5085'
quality_controlled: '1'
scopus_import: 1
status: public
title: 'Fabry-Perot interferometer with quantum mirrors: Nonlinear light transport
and rectification'
type: journal_article
user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87
volume: 113
year: '2014'
...