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Quantum metrology timing limits of the Hong-Ou-Mandel interferometer and of general two-photon measurements

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1103/PhysRevA.106.063715
AuteurRechercher : 1Identifiant ORCID : https://orcid.org/0000-0002-1823-7263; Rechercher : Identifiant ORCID : https://orcid.org/0000-0002-4285-0367; Rechercher : 1
Affiliation
  1. Conseil national de recherches du Canada. Technologies de sécurité et de rupture
Bailleur de fondsRechercher : Natural Sciences and Engineering Research Council of Canada; Rechercher : Canada First Research Excellence Fund; Rechercher : Brookhaven National Laboratory; Rechercher : U.S. Department of Energy; Rechercher : Canada Graduate Scholarships Master's
FormatTexte, Article
Résumé
We examine the precision limits of Hong-Ou-Mandel (HOM) timing measurements, as well as precision limits applying to generalized two-photon measurements. As a special case we consider the use of two-photon measurements using photons with variable bandwidths and frequency correlations. When the photon bandwidths are not equal, maximizing the measurement precision involves a tradeoff between high interference visibility and strong frequency anticorrelations, with the optimal precision occurring when the photons share nonmaximal frequency anticorrelations. We show that a generalized measurement has precision limits that are qualitatively similar to those of the HOM measurement whenever the generalized measurement is insensitive to the net delay of both photons. By examining the performance of states with more general frequency distributions, our analysis allows for engineering of the joint spectral amplitude for use in realistic situations, in which both photons may not have ideal spectral properties.
Date de publication
Maison d’éditionAmerican Physical Society
Dans
  • Physical Review A 106, nº 6, 063715 (22 décembre 2022).
Langueanglais
Publications évaluées par des pairsOui
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Identificateur de l’enregistrementdc584418-0a35-4c4f-84cc-ae6500477eb1
Enregistrement créé2024-01-29
Enregistrement modifié2024-01-29
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