---
_id: '14342'
abstract:
- lang: eng
  text: We propose a simple method to measure nonlinear Kerr refractive index in mid-infrared
    frequency range that avoids using sophisticated infrared detectors. Our approach
    is based on using a near-infrared probe beam which interacts with a mid-IR beam
    via wavelength-non-degenerate cross-phase modulation (XPM). By carefully measuring
    XPM-induced spectral modifications in the probe beam and comparing the experimental
    data with simulation results, we extract the value for the non-degenerate Kerr
    index. Finally, in order to obtain the value of degenerate mid-IR Kerr index,
    we use the well-established two-band formalism of Sheik-Bahae et al., which is
    shown to become particularly simple in the limit of low frequencies. The proposed
    technique is complementary to the conventional techniques, such as z-scan, and
    has the advantage of not requiring any mid-infrared detectors.
acknowledgement: The work was supported by IST Austria. The authors would like to
  gratefully acknowledge the help and assistance of Professor John M. Dudley.
article_number: '091104'
article_processing_charge: Yes (in subscription journal)
article_type: original
arxiv: 1
author:
- first_name: Dusan
  full_name: Lorenc, Dusan
  id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
  last_name: Lorenc
- first_name: Zhanybek
  full_name: Alpichshev, Zhanybek
  id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
  last_name: Alpichshev
  orcid: 0000-0002-7183-5203
citation:
  ama: Lorenc D, Alpichshev Z. Mid-infrared Kerr index evaluation via cross-phase
    modulation with a near-infrared probe beam. <i>Applied Physics Letters</i>. 2023;123(9).
    doi:<a href="https://doi.org/10.1063/5.0161713">10.1063/5.0161713</a>
  apa: Lorenc, D., &#38; Alpichshev, Z. (2023). Mid-infrared Kerr index evaluation
    via cross-phase modulation with a near-infrared probe beam. <i>Applied Physics
    Letters</i>. AIP Publishing. <a href="https://doi.org/10.1063/5.0161713">https://doi.org/10.1063/5.0161713</a>
  chicago: Lorenc, Dusan, and Zhanybek Alpichshev. “Mid-Infrared Kerr Index Evaluation
    via Cross-Phase Modulation with a near-Infrared Probe Beam.” <i>Applied Physics
    Letters</i>. AIP Publishing, 2023. <a href="https://doi.org/10.1063/5.0161713">https://doi.org/10.1063/5.0161713</a>.
  ieee: D. Lorenc and Z. Alpichshev, “Mid-infrared Kerr index evaluation via cross-phase
    modulation with a near-infrared probe beam,” <i>Applied Physics Letters</i>, vol.
    123, no. 9. AIP Publishing, 2023.
  ista: Lorenc D, Alpichshev Z. 2023. Mid-infrared Kerr index evaluation via cross-phase
    modulation with a near-infrared probe beam. Applied Physics Letters. 123(9), 091104.
  mla: Lorenc, Dusan, and Zhanybek Alpichshev. “Mid-Infrared Kerr Index Evaluation
    via Cross-Phase Modulation with a near-Infrared Probe Beam.” <i>Applied Physics
    Letters</i>, vol. 123, no. 9, 091104, AIP Publishing, 2023, doi:<a href="https://doi.org/10.1063/5.0161713">10.1063/5.0161713</a>.
  short: D. Lorenc, Z. Alpichshev, Applied Physics Letters 123 (2023).
date_created: 2023-09-17T22:01:09Z
date_published: 2023-08-28T00:00:00Z
date_updated: 2023-09-20T11:50:06Z
day: '28'
ddc:
- '530'
department:
- _id: ZhAl
doi: 10.1063/5.0161713
external_id:
  arxiv:
  - '2306.09043'
file:
- access_level: open_access
  checksum: 89a1b604d58b209fec66c6b6f919ac98
  content_type: application/pdf
  creator: dernst
  date_created: 2023-09-20T11:36:16Z
  date_updated: 2023-09-20T11:36:16Z
  file_id: '14353'
  file_name: 2023_ApplPhysLetter_Lorenc.pdf
  file_size: 1486715
  relation: main_file
  success: 1
file_date_updated: 2023-09-20T11:36:16Z
has_accepted_license: '1'
intvolume: '       123'
issue: '9'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
publication: Applied Physics Letters
publication_identifier:
  issn:
  - 0003-6951
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Mid-infrared Kerr index evaluation via cross-phase modulation with a near-infrared
  probe beam
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: 123
year: '2023'
...
---
_id: '11417'
abstract:
- lang: eng
  text: "Over the past few years, the field of quantum information science has seen
    tremendous progress toward realizing large-scale quantum computers. With demonstrations
    of quantum computers outperforming classical computers for a select range of problems,1–3
    we have finally entered the noisy, intermediate-scale quantum (NISQ) computing
    era. While the quantum computers of today are technological marvels, they are
    not yet error corrected, and it is unclear whether any system will scale beyond
    a few hundred logical qubits without significant changes to architecture and control
    schemes. Today's quantum systems are analogous to the ENIAC (Electronic Numerical
    Integrator And Computer) and EDVAC (Electronic Discrete Variable Automatic Computer)
    systems of the 1940s, which ran on vacuum tubes. These machines were built on
    a solid, nominally scalable architecture and when they were developed, nobody
    could have predicted the development of the transistor and the impact of the resulting
    semiconductor industry. Simply put, the computers of today are nothing like the
    early computers of the 1940s. We believe that the qubits of future fault-tolerant
    quantum systems will look quite different from the qubits of the NISQ machines
    in operation today. This Special Topic issue is devoted to new and emerging quantum
    systems with a focus on enabling technologies that can eventually lead to the
    quantum analog to the transistor. We have solicited both research4–18 and perspective
    articles19–21 to discuss new and emerging qubit systems with a focus on novel
    materials, encodings, and architectures. We are proud to present a collection
    that touches on a wide range of technologies including superconductors,7–13,21
    semiconductors,15–17,19 and individual atomic qubits.18\r\n"
acknowledgement: "We would like to thank all of the authors who contributed to\r\nthis
  Special Topic. We would also like to thank the editorial team at\r\nAPL including
  Jessica Trudeau, Emma Van Burns, Martin Weides,\r\nand Lesley Cohen."
article_number: '190401'
article_processing_charge: No
article_type: letter_note
author:
- first_name: Anthony J.
  full_name: Sigillito, Anthony J.
  last_name: Sigillito
- first_name: Jacob P.
  full_name: Covey, Jacob P.
  last_name: Covey
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
- first_name: Karl
  full_name: Petersson, Karl
  last_name: Petersson
- first_name: Stefan
  full_name: Preble, Stefan
  last_name: Preble
citation:
  ama: 'Sigillito AJ, Covey JP, Fink JM, Petersson K, Preble S. Emerging qubit systems:
    Guest editorial. <i>Applied Physics Letters</i>. 2022;120(19). doi:<a href="https://doi.org/10.1063/5.0097339">10.1063/5.0097339</a>'
  apa: 'Sigillito, A. J., Covey, J. P., Fink, J. M., Petersson, K., &#38; Preble,
    S. (2022). Emerging qubit systems: Guest editorial. <i>Applied Physics Letters</i>.
    American Institute of Physics. <a href="https://doi.org/10.1063/5.0097339">https://doi.org/10.1063/5.0097339</a>'
  chicago: 'Sigillito, Anthony J., Jacob P. Covey, Johannes M Fink, Karl Petersson,
    and Stefan Preble. “Emerging Qubit Systems: Guest Editorial.” <i>Applied Physics
    Letters</i>. American Institute of Physics, 2022. <a href="https://doi.org/10.1063/5.0097339">https://doi.org/10.1063/5.0097339</a>.'
  ieee: 'A. J. Sigillito, J. P. Covey, J. M. Fink, K. Petersson, and S. Preble, “Emerging
    qubit systems: Guest editorial,” <i>Applied Physics Letters</i>, vol. 120, no.
    19. American Institute of Physics, 2022.'
  ista: 'Sigillito AJ, Covey JP, Fink JM, Petersson K, Preble S. 2022. Emerging qubit
    systems: Guest editorial. Applied Physics Letters. 120(19), 190401.'
  mla: 'Sigillito, Anthony J., et al. “Emerging Qubit Systems: Guest Editorial.” <i>Applied
    Physics Letters</i>, vol. 120, no. 19, 190401, American Institute of Physics,
    2022, doi:<a href="https://doi.org/10.1063/5.0097339">10.1063/5.0097339</a>.'
  short: A.J. Sigillito, J.P. Covey, J.M. Fink, K. Petersson, S. Preble, Applied Physics
    Letters 120 (2022).
date_created: 2022-05-29T22:01:53Z
date_published: 2022-05-12T00:00:00Z
date_updated: 2023-08-03T07:16:20Z
day: '12'
department:
- _id: JoFi
doi: 10.1063/5.0097339
external_id:
  isi:
  - '000796002100002'
intvolume: '       120'
isi: 1
issue: '19'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1063/5.0097339
month: '05'
oa: 1
oa_version: Published Version
publication: Applied Physics Letters
publication_identifier:
  issn:
  - 0003-6951
publication_status: published
publisher: American Institute of Physics
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Emerging qubit systems: Guest editorial'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 120
year: '2022'
...
---
_id: '8746'
abstract:
- lang: eng
  text: "Research in the field of colloidal semiconductor nanocrystals (NCs) has progressed
    tremendously, mostly because of their exceptional optoelectronic properties. Core@shell
    NCs, in which one or more inorganic layers overcoat individual NCs, recently received
    significant attention due to their remarkable optical characteristics. Reduced
    Auger recombination, suppressed blinking, and enhanced carrier multiplication
    are among the merits of core@shell NCs. Despite their importance in device development,
    the influence of the shell and the surface modification of the core@shell NC assemblies
    on the charge carrier transport remains a pertinent research objective. Type-II
    PbTe@PbS core@shell NCs, in which exclusive electron transport was demonstrated,
    still exhibit instability of their electron \r\n ransport. Here, we demonstrate
    the enhancement of electron transport and stability in PbTe@PbS core@shell NC
    assemblies using iodide as a surface passivating ligand. The combination of the
    PbS shelling and the use of the iodide ligand contributes to the addition of one
    mobile electron for each core@shell NC. Furthermore, both electron mobility and
    on/off current modulation ratio values of the core@shell NC field-effect transistor
    are steady with the usage of iodide. Excellent stability in these exclusively
    electron-transporting core@shell NCs paves the way for their utilization in electronic
    devices. "
acknowledgement: "This work was partly supported by Grants-in-Aid for Scientific Research
  by Young Scientist A (KAKENHI Wakate-A) No.\r\nJP17H04802, Grants-in-Aid for Scientific
  Research No. JP19H05602 from the Japan Society for the Promotion of Science, and
  RIKEN Incentive Research Grant (Shoreikadai) 2016. M.V.K. and M.I. acknowledge financial
  support from the European Union (EU) via FP7 ERC Starting Grant 2012 (Project NANOSOLID,
  GA No. 306733) and ETH Zurich via ETH career seed grant (No. SEED-18 16-2). We acknowledge
  Mrs. T. Kikitsu and Dr. D. Hashizume (RIKEN-CEMS) for access to the transmission
  electron microscope facility."
article_number: '173101'
article_processing_charge: No
article_type: original
author:
- first_name: Retno
  full_name: Miranti, Retno
  last_name: Miranti
- first_name: Ricky Dwi
  full_name: Septianto, Ricky Dwi
  last_name: Septianto
- first_name: Maria
  full_name: Ibáñez, Maria
  id: 43C61214-F248-11E8-B48F-1D18A9856A87
  last_name: Ibáñez
  orcid: 0000-0001-5013-2843
- first_name: Maksym V.
  full_name: Kovalenko, Maksym V.
  last_name: Kovalenko
- first_name: Nobuhiro
  full_name: Matsushita, Nobuhiro
  last_name: Matsushita
- first_name: Yoshihiro
  full_name: Iwasa, Yoshihiro
  last_name: Iwasa
- first_name: Satria Zulkarnaen
  full_name: Bisri, Satria Zulkarnaen
  last_name: Bisri
citation:
  ama: Miranti R, Septianto RD, Ibáñez M, et al. Electron transport in iodide-capped
    core@shell PbTe@PbS colloidal nanocrystal solids. <i>Applied Physics Letters</i>.
    2020;117(17). doi:<a href="https://doi.org/10.1063/5.0025965">10.1063/5.0025965</a>
  apa: Miranti, R., Septianto, R. D., Ibáñez, M., Kovalenko, M. V., Matsushita, N.,
    Iwasa, Y., &#38; Bisri, S. Z. (2020). Electron transport in iodide-capped core@shell
    PbTe@PbS colloidal nanocrystal solids. <i>Applied Physics Letters</i>. AIP Publishing.
    <a href="https://doi.org/10.1063/5.0025965">https://doi.org/10.1063/5.0025965</a>
  chicago: Miranti, Retno, Ricky Dwi Septianto, Maria Ibáñez, Maksym V. Kovalenko,
    Nobuhiro Matsushita, Yoshihiro Iwasa, and Satria Zulkarnaen Bisri. “Electron Transport
    in Iodide-Capped Core@shell PbTe@PbS Colloidal Nanocrystal Solids.” <i>Applied
    Physics Letters</i>. AIP Publishing, 2020. <a href="https://doi.org/10.1063/5.0025965">https://doi.org/10.1063/5.0025965</a>.
  ieee: R. Miranti <i>et al.</i>, “Electron transport in iodide-capped core@shell
    PbTe@PbS colloidal nanocrystal solids,” <i>Applied Physics Letters</i>, vol. 117,
    no. 17. AIP Publishing, 2020.
  ista: Miranti R, Septianto RD, Ibáñez M, Kovalenko MV, Matsushita N, Iwasa Y, Bisri
    SZ. 2020. Electron transport in iodide-capped core@shell PbTe@PbS colloidal nanocrystal
    solids. Applied Physics Letters. 117(17), 173101.
  mla: Miranti, Retno, et al. “Electron Transport in Iodide-Capped Core@shell PbTe@PbS
    Colloidal Nanocrystal Solids.” <i>Applied Physics Letters</i>, vol. 117, no. 17,
    173101, AIP Publishing, 2020, doi:<a href="https://doi.org/10.1063/5.0025965">10.1063/5.0025965</a>.
  short: R. Miranti, R.D. Septianto, M. Ibáñez, M.V. Kovalenko, N. Matsushita, Y.
    Iwasa, S.Z. Bisri, Applied Physics Letters 117 (2020).
date_created: 2020-11-09T08:05:43Z
date_published: 2020-10-26T00:00:00Z
date_updated: 2023-09-05T11:57:23Z
day: '26'
department:
- _id: MaIb
doi: 10.1063/5.0025965
external_id:
  isi:
  - '000591639700001'
intvolume: '       117'
isi: 1
issue: '17'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1063/5.0025965
month: '10'
oa: 1
oa_version: Published Version
publication: Applied Physics Letters
publication_identifier:
  eissn:
  - 1077-3118
  issn:
  - 0003-6951
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Electron transport in iodide-capped core@shell PbTe@PbS colloidal nanocrystal
  solids
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 117
year: '2020'
...