Related papers: Measurement of ultrashort bi-photon correlation times with an integrated two-colour broadband SU(1,1)-interferometer

Measurement of ultrashort bi-photon correlation times with an integrated two-colour broadband SU(1,1)-interferometer

URL: http://arxiv.org/abs/2310.04293v1
Date: Fri, 6 Oct 2023 14:51:30 GMT
Title: Measurement of ultrashort bi-photon correlation times with an integrated two-colour broadband SU(1,1)-interferometer
Authors: F. Roeder, R. Pollmann, M. Stefszky, M. Santandrea, K.-H. Luo, V. Quiring, R. Ricken, C. Eigner, B. Brecht, C. Silberhorn
Abstract summary: The bi-photon correlation time is a key performance identifier for many quantum spectroscopy applications. Here, we retrieve ultrashort bi-photon correlation times of around $100,mathrmfs$ by measuring simultaneously spectral and temporal interferograms.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: The bi-photon correlation time, a measure for the conditional uncertainty in the temporal arrival of two photons from a photon pair source, is a key performance identifier for many quantum spectroscopy applications, with shorter correlation times typically yielding better performance. Furthermore, it provides fundamental insight into the effects of dispersion on the bi-photon state. Here, we retrieve ultrashort bi-photon correlation times of around $100\,\mathrm{fs}$ by measuring simultaneously spectral and temporal interferograms at the output of an SU(1,1) interferometer based on an integrated broadband parametric down-conversion source in a $\mathrm{Ti:LiNbO}_3$ waveguide

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