---
_id: '66741'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title>\r\n                  <jats:p>\r\n                    We
    study theoretically how high-gain effects affect the measurement outcome of visible
    signal spectra in undetected photon measurement schemes. We consider two interferometric
    configurations: firstly, the SU(1,1) interferometer where the idler incurs loss
    and additional dispersion in between two identical, lossless, squeezers; secondly,
    the induced coherence interferometer where the idler incurs loss and additional
    dispersion in between two identical, lossless, squeezers and where the second
    squeezer is seeded by the idler and a vacuum ancilla mode. Furthermore, we consider
    a distributed loss configuration where the idler incurs loss as it propagates
    in the nonlinear medium. Motivated by experimental evidence and due to the fact
    that broadband sources are ideal for these measurement schemes, we use the dispersive
    data of a third-order dispersion engineered integrated waveguide parametric down
    conversion (PDC) source presented in Roeder\r\n                    <jats:italic>et
    al</jats:italic>\r\n                    (2024 New J. Phys.\r\n                    <jats:bold>26</jats:bold>\r\n
    \                   123025) to model the PDC spectra in the three configurations.
    For each configuration we consider the case of idler-only (i) absorption, (ii)
    additional dispersion, and (iii) the combined effects. We obtain results which
    outline the strength and weaknesses of the different configurations at different
    operation points.\r\n                  </jats:p>"
article_number: '074509'
author:
- first_name: Martin
  full_name: Houde, Martin
  last_name: Houde
- first_name: Franz
  full_name: Roeder, Franz
  id: '88149'
  last_name: Roeder
- first_name: Christine
  full_name: Silberhorn, Christine
  id: '26263'
  last_name: Silberhorn
- first_name: Benjamin
  full_name: Brecht, Benjamin
  id: '27150'
  last_name: Brecht
  orcid: '0000-0003-4140-0556 '
- first_name: Nicolás
  full_name: Quesada, Nicolás
  last_name: Quesada
citation:
  ama: Houde M, Roeder F, Silberhorn C, Brecht B, Quesada N. High-gain effects in
    broadband continuous-wave parametric down conversion sources and measurements
    with undetected photons. <i>New Journal of Physics</i>. 2026;28(7). doi:<a href="https://doi.org/10.1088/1367-2630/ae8692">10.1088/1367-2630/ae8692</a>
  apa: Houde, M., Roeder, F., Silberhorn, C., Brecht, B., &#38; Quesada, N. (2026).
    High-gain effects in broadband continuous-wave parametric down conversion sources
    and measurements with undetected photons. <i>New Journal of Physics</i>, <i>28</i>(7),
    Article 074509. <a href="https://doi.org/10.1088/1367-2630/ae8692">https://doi.org/10.1088/1367-2630/ae8692</a>
  bibtex: '@article{Houde_Roeder_Silberhorn_Brecht_Quesada_2026, title={High-gain
    effects in broadband continuous-wave parametric down conversion sources and measurements
    with undetected photons}, volume={28}, DOI={<a href="https://doi.org/10.1088/1367-2630/ae8692">10.1088/1367-2630/ae8692</a>},
    number={7074509}, journal={New Journal of Physics}, publisher={IOP Publishing},
    author={Houde, Martin and Roeder, Franz and Silberhorn, Christine and Brecht,
    Benjamin and Quesada, Nicolás}, year={2026} }'
  chicago: Houde, Martin, Franz Roeder, Christine Silberhorn, Benjamin Brecht, and
    Nicolás Quesada. “High-Gain Effects in Broadband Continuous-Wave Parametric down
    Conversion Sources and Measurements with Undetected Photons.” <i>New Journal of
    Physics</i> 28, no. 7 (2026). <a href="https://doi.org/10.1088/1367-2630/ae8692">https://doi.org/10.1088/1367-2630/ae8692</a>.
  ieee: 'M. Houde, F. Roeder, C. Silberhorn, B. Brecht, and N. Quesada, “High-gain
    effects in broadband continuous-wave parametric down conversion sources and measurements
    with undetected photons,” <i>New Journal of Physics</i>, vol. 28, no. 7, Art.
    no. 074509, 2026, doi: <a href="https://doi.org/10.1088/1367-2630/ae8692">10.1088/1367-2630/ae8692</a>.'
  mla: Houde, Martin, et al. “High-Gain Effects in Broadband Continuous-Wave Parametric
    down Conversion Sources and Measurements with Undetected Photons.” <i>New Journal
    of Physics</i>, vol. 28, no. 7, 074509, IOP Publishing, 2026, doi:<a href="https://doi.org/10.1088/1367-2630/ae8692">10.1088/1367-2630/ae8692</a>.
  short: M. Houde, F. Roeder, C. Silberhorn, B. Brecht, N. Quesada, New Journal of
    Physics 28 (2026).
date_created: 2026-08-18T10:21:08Z
date_updated: 2026-08-18T10:21:29Z
department:
- _id: '15'
- _id: '623'
- _id: '288'
doi: 10.1088/1367-2630/ae8692
intvolume: '        28'
issue: '7'
language:
- iso: eng
publication: New Journal of Physics
publication_identifier:
  issn:
  - 1367-2630
publication_status: published
publisher: IOP Publishing
status: public
title: High-gain effects in broadband continuous-wave parametric down conversion sources
  and measurements with undetected photons
type: journal_article
user_id: '27150'
volume: 28
year: '2026'
...