---
_id: '54288'
abstract:
- lang: eng
  text: "<jats:p>The ability to apply user-chosen large-scale unitary operations with
    high fidelity to a quantum state is key to realizing future photonic quantum technologies.
    Here, we realize the implementation of programmable unitary operations on up to
    64 frequency-bin modes. To benchmark the performance of our system, we probe different
    quantum walk unitary operations, in particular, Grover walks on four-dimensional
    hypercubes with similarities exceeding 95% and quantum walks with 400 steps on
    circles and finite lines with similarities of 98%. Our results open a path toward
    implementing high-quality unitary operations, which can form the basis for applications
    in complex tasks, such as Gaussian boson sampling.</jats:p>\r\n          <jats:sec>\r\n
    \           <jats:title/>\r\n            <jats:supplementary-material>\r\n              <jats:permissions>\r\n
    \               <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement>\r\n
    \               <jats:copyright-year>2024</jats:copyright-year>\r\n              </jats:permissions>\r\n
    \           </jats:supplementary-material>\r\n          </jats:sec>"
article_number: L022040
author:
- first_name: Syamsundar
  full_name: De, Syamsundar
  last_name: De
- first_name: Vahid
  full_name: Ansari, Vahid
  last_name: Ansari
- first_name: Jan
  full_name: Sperling, Jan
  id: '75127'
  last_name: Sperling
  orcid: 0000-0002-5844-3205
- first_name: Sonja
  full_name: Barkhofen, Sonja
  id: '48188'
  last_name: Barkhofen
- first_name: Benjamin
  full_name: Brecht, Benjamin
  id: '27150'
  last_name: Brecht
  orcid: '0000-0003-4140-0556 '
- first_name: Christine
  full_name: Silberhorn, Christine
  id: '26263'
  last_name: Silberhorn
citation:
  ama: De S, Ansari V, Sperling J, Barkhofen S, Brecht B, Silberhorn C. Realization
    of high-fidelity unitary operations on up to 64 frequency bins. <i>Physical Review
    Research</i>. 2024;6(2). doi:<a href="https://doi.org/10.1103/physrevresearch.6.l022040">10.1103/physrevresearch.6.l022040</a>
  apa: De, S., Ansari, V., Sperling, J., Barkhofen, S., Brecht, B., &#38; Silberhorn,
    C. (2024). Realization of high-fidelity unitary operations on up to 64 frequency
    bins. <i>Physical Review Research</i>, <i>6</i>(2), Article L022040. <a href="https://doi.org/10.1103/physrevresearch.6.l022040">https://doi.org/10.1103/physrevresearch.6.l022040</a>
  bibtex: '@article{De_Ansari_Sperling_Barkhofen_Brecht_Silberhorn_2024, title={Realization
    of high-fidelity unitary operations on up to 64 frequency bins}, volume={6}, DOI={<a
    href="https://doi.org/10.1103/physrevresearch.6.l022040">10.1103/physrevresearch.6.l022040</a>},
    number={2L022040}, journal={Physical Review Research}, publisher={American Physical
    Society (APS)}, author={De, Syamsundar and Ansari, Vahid and Sperling, Jan and
    Barkhofen, Sonja and Brecht, Benjamin and Silberhorn, Christine}, year={2024}
    }'
  chicago: De, Syamsundar, Vahid Ansari, Jan Sperling, Sonja Barkhofen, Benjamin Brecht,
    and Christine Silberhorn. “Realization of High-Fidelity Unitary Operations on
    up to 64 Frequency Bins.” <i>Physical Review Research</i> 6, no. 2 (2024). <a
    href="https://doi.org/10.1103/physrevresearch.6.l022040">https://doi.org/10.1103/physrevresearch.6.l022040</a>.
  ieee: 'S. De, V. Ansari, J. Sperling, S. Barkhofen, B. Brecht, and C. Silberhorn,
    “Realization of high-fidelity unitary operations on up to 64 frequency bins,”
    <i>Physical Review Research</i>, vol. 6, no. 2, Art. no. L022040, 2024, doi: <a
    href="https://doi.org/10.1103/physrevresearch.6.l022040">10.1103/physrevresearch.6.l022040</a>.'
  mla: De, Syamsundar, et al. “Realization of High-Fidelity Unitary Operations on
    up to 64 Frequency Bins.” <i>Physical Review Research</i>, vol. 6, no. 2, L022040,
    American Physical Society (APS), 2024, doi:<a href="https://doi.org/10.1103/physrevresearch.6.l022040">10.1103/physrevresearch.6.l022040</a>.
  short: S. De, V. Ansari, J. Sperling, S. Barkhofen, B. Brecht, C. Silberhorn, Physical
    Review Research 6 (2024).
date_created: 2024-05-14T12:40:48Z
date_updated: 2025-12-18T16:14:39Z
department:
- _id: '623'
- _id: '288'
- _id: '15'
doi: 10.1103/physrevresearch.6.l022040
intvolume: '         6'
issue: '2'
language:
- iso: eng
project:
- _id: '216'
  name: 'QuPoPCoRN: QUPOPCORN: Quantum Particles on Programmable Complex Reconfigurable
    Networks'
publication: Physical Review Research
publication_identifier:
  issn:
  - 2643-1564
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Realization of high-fidelity unitary operations on up to 64 frequency bins
type: journal_article
user_id: '27150'
volume: 6
year: '2024'
...