[{"abstract":[{"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>","lang":"eng"}],"issue":"3","publication":"Journal of Physics: Photonics","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"type":"journal_article","date_created":"2026-08-18T10:20:21Z","intvolume":"         8","publication_status":"published","date_updated":"2026-08-18T10:20:54Z","author":[{"last_name":"Houde","first_name":"Martin","full_name":"Houde, Martin"},{"full_name":"Roeder, Franz","last_name":"Roeder","first_name":"Franz","id":"88149"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"orcid":"0000-0003-4140-0556 ","first_name":"Benjamin","last_name":"Brecht","full_name":"Brecht, Benjamin","id":"27150"},{"full_name":"Quesada, Nicolás","first_name":"Nicolás","last_name":"Quesada"}],"publication_identifier":{"issn":["2515-7647"]},"title":"Quantum fisher information analysis for absorption measurements with undetected photons","year":"2026","doi":"10.1088/2515-7647/ae82a2","language":[{"iso":"eng"}],"article_number":"035013","citation":{"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>.","short":"M. Houde, F. Roeder, C. Silberhorn, B. Brecht, N. Quesada, Journal of Physics: Photonics 8 (2026).","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>","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>.","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>","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} }","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>."},"status":"public","volume":8,"user_id":"27150","publisher":"IOP Publishing","_id":"66740"}]