---
_id: '66740'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title>\r\n                  <jats:p>\r\n                    We
    theoretically compare the quantum Fisher information (QFI) for three configurations
    of absorption spectroscopy with undetected idler photons: an SU(1,1) interferometer
    with inter-source idler loss, an induced-coherence (IC) setup in which the idler
    partially seeds a second squeezer together with a vacuum ancilla, and a distributed-loss
    (DL) scheme with in-medium attenuation. We calculate the QFI as a function of
    parametric gain for both full and signal-only detection access. For losses below
    99% and low to moderate gain, the SU(1,1) configuration provides the largest QFI.
    At high gain and intermediate loss, the IC scheme performs best, while under extreme
    attenuation (transmission\r\n                    <jats:inline-formula>\r\n                      <jats:tex-math>\r\n
    \                       \r\n                      </jats:tex-math>\r\n                      <mml:math
    xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\">\r\n                        <mml:mrow>\r\n
    \                         <mml:mo>&lt;</mml:mo>\r\n                        </mml:mrow>\r\n
    \                     </mml:math>\r\n                    </jats:inline-formula>\r\n
    \                   1%) the DL model becomes optimal. These results delineate
    the measurement regimes in which each architecture is optimal in terms of information
    theory.\r\n                  </jats:p>"
article_number: '035013'
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. Quantum fisher information
    analysis for absorption measurements with undetected photons. <i>Journal of Physics:
    Photonics</i>. 2026;8(3). doi:<a href="https://doi.org/10.1088/2515-7647/ae82a2">10.1088/2515-7647/ae82a2</a>'
  apa: 'Houde, M., Roeder, F., Silberhorn, C., Brecht, B., &#38; Quesada, N. (2026).
    Quantum fisher information analysis for absorption measurements with undetected
    photons. <i>Journal of Physics: Photonics</i>, <i>8</i>(3), Article 035013. <a
    href="https://doi.org/10.1088/2515-7647/ae82a2">https://doi.org/10.1088/2515-7647/ae82a2</a>'
  bibtex: '@article{Houde_Roeder_Silberhorn_Brecht_Quesada_2026, title={Quantum fisher
    information analysis for absorption measurements with undetected photons}, volume={8},
    DOI={<a href="https://doi.org/10.1088/2515-7647/ae82a2">10.1088/2515-7647/ae82a2</a>},
    number={3035013}, journal={Journal of Physics: Photonics}, 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. “Quantum Fisher Information Analysis for Absorption Measurements
    with Undetected Photons.” <i>Journal of Physics: Photonics</i> 8, no. 3 (2026).
    <a href="https://doi.org/10.1088/2515-7647/ae82a2">https://doi.org/10.1088/2515-7647/ae82a2</a>.'
  ieee: 'M. Houde, F. Roeder, C. Silberhorn, B. Brecht, and N. Quesada, “Quantum fisher
    information analysis for absorption measurements with undetected photons,” <i>Journal
    of Physics: Photonics</i>, vol. 8, no. 3, Art. no. 035013, 2026, doi: <a href="https://doi.org/10.1088/2515-7647/ae82a2">10.1088/2515-7647/ae82a2</a>.'
  mla: 'Houde, Martin, et al. “Quantum Fisher Information Analysis for Absorption
    Measurements with Undetected Photons.” <i>Journal of Physics: Photonics</i>, vol.
    8, no. 3, 035013, IOP Publishing, 2026, doi:<a href="https://doi.org/10.1088/2515-7647/ae82a2">10.1088/2515-7647/ae82a2</a>.'
  short: 'M. Houde, F. Roeder, C. Silberhorn, B. Brecht, N. Quesada, Journal of Physics:
    Photonics 8 (2026).'
date_created: 2026-08-18T10:20:21Z
date_updated: 2026-08-18T10:20:54Z
department:
- _id: '15'
- _id: '623'
- _id: '288'
doi: 10.1088/2515-7647/ae82a2
intvolume: '         8'
issue: '3'
language:
- iso: eng
publication: 'Journal of Physics: Photonics'
publication_identifier:
  issn:
  - 2515-7647
publication_status: published
publisher: IOP Publishing
status: public
title: Quantum fisher information analysis for absorption measurements with undetected
  photons
type: journal_article
user_id: '27150'
volume: 8
year: '2026'
...