---
_id: '65575'
abstract:
- lang: eng
  text: <jats:p>For the ever-growing field of quantum information processing, large-scale,
    efficient multiport interferometers serving as photonic processors are required.
    In this context, the suitability of quantum walks as the interferometric base
    for universal computation has been theoretically proven. In this work, we bridge
    the gap between theoretical proposals and state-of-the-art experimental capabilities
    by providing the recipe for the implementation of a universal photonic processor
    in discrete-time quantum walks. Specifically, we present the protocol for translating
    arbitrary linear transformations into the coin and step operator of a quantum
    walk and map these to the experimental parameters of the established time-multiplexed
    platform [A. Schreiber , Phys. Rev. Lett. , 050502 (2010)]. We show that our interface
    is highly scalable and resource efficient due to the hybrid encoding consisting
    of multiple degrees of freedom. Finally, we prove that our system is highly resilient
    against experimental imperfections and show that it compares favorably against
    existing architectures.</jats:p>
article_number: '054011'
author:
- first_name: Jonas
  full_name: Lammers, Jonas
  last_name: Lammers
- first_name: Laura
  full_name: Ares, Laura
  last_name: Ares
- first_name: Federico
  full_name: Pegoraro, Federico
  id: '88928'
  last_name: Pegoraro
- first_name: Philip
  full_name: Held, Philip
  id: '68236'
  last_name: Held
- first_name: Benjamin
  full_name: Brecht, Benjamin
  id: '27150'
  last_name: Brecht
  orcid: '0000-0003-4140-0556 '
- first_name: Jan
  full_name: Sperling, Jan
  id: '75127'
  last_name: Sperling
  orcid: 0000-0002-5844-3205
- first_name: Christine
  full_name: Silberhorn, Christine
  id: '26263'
  last_name: Silberhorn
citation:
  ama: Lammers J, Ares L, Pegoraro F, et al. Resource-efficient universal photonic
    processors based on time-multiplexed hybrid architectures. <i>Physical Review
    Applied</i>. 2026;25(5). doi:<a href="https://doi.org/10.1103/x99y-2sms">10.1103/x99y-2sms</a>
  apa: Lammers, J., Ares, L., Pegoraro, F., Held, P., Brecht, B., Sperling, J., &#38;
    Silberhorn, C. (2026). Resource-efficient universal photonic processors based
    on time-multiplexed hybrid architectures. <i>Physical Review Applied</i>, <i>25</i>(5),
    Article 054011. <a href="https://doi.org/10.1103/x99y-2sms">https://doi.org/10.1103/x99y-2sms</a>
  bibtex: '@article{Lammers_Ares_Pegoraro_Held_Brecht_Sperling_Silberhorn_2026, title={Resource-efficient
    universal photonic processors based on time-multiplexed hybrid architectures},
    volume={25}, DOI={<a href="https://doi.org/10.1103/x99y-2sms">10.1103/x99y-2sms</a>},
    number={5054011}, journal={Physical Review Applied}, publisher={American Physical
    Society (APS)}, author={Lammers, Jonas and Ares, Laura and Pegoraro, Federico
    and Held, Philip and Brecht, Benjamin and Sperling, Jan and Silberhorn, Christine},
    year={2026} }'
  chicago: Lammers, Jonas, Laura Ares, Federico Pegoraro, Philip Held, Benjamin Brecht,
    Jan Sperling, and Christine Silberhorn. “Resource-Efficient Universal Photonic
    Processors Based on Time-Multiplexed Hybrid Architectures.” <i>Physical Review
    Applied</i> 25, no. 5 (2026). <a href="https://doi.org/10.1103/x99y-2sms">https://doi.org/10.1103/x99y-2sms</a>.
  ieee: 'J. Lammers <i>et al.</i>, “Resource-efficient universal photonic processors
    based on time-multiplexed hybrid architectures,” <i>Physical Review Applied</i>,
    vol. 25, no. 5, Art. no. 054011, 2026, doi: <a href="https://doi.org/10.1103/x99y-2sms">10.1103/x99y-2sms</a>.'
  mla: Lammers, Jonas, et al. “Resource-Efficient Universal Photonic Processors Based
    on Time-Multiplexed Hybrid Architectures.” <i>Physical Review Applied</i>, vol.
    25, no. 5, 054011, American Physical Society (APS), 2026, doi:<a href="https://doi.org/10.1103/x99y-2sms">10.1103/x99y-2sms</a>.
  short: J. Lammers, L. Ares, F. Pegoraro, P. Held, B. Brecht, J. Sperling, C. Silberhorn,
    Physical Review Applied 25 (2026).
date_created: 2026-05-07T07:00:08Z
date_updated: 2026-05-07T07:01:09Z
department:
- _id: '623'
- _id: '15'
- _id: '170'
- _id: '706'
- _id: '429'
doi: 10.1103/x99y-2sms
intvolume: '        25'
issue: '5'
language:
- iso: eng
publication: Physical Review Applied
publication_identifier:
  issn:
  - 2331-7019
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Resource-efficient universal photonic processors based on time-multiplexed
  hybrid architectures
type: journal_article
user_id: '75127'
volume: 25
year: '2026'
...