Hong-Ou-Mandel Interference with Imperfect Single Photon Sources.

H Ollivier, S E Thomas, S C Wein, I Maillette de Buy Wenniger, N Coste, J C Loredo, N Somaschi, A Harouri, A Lemaitre, I Sagnes, L Lanco, C Simon, C Anton, O Krebs, P Senellart

Physical review letters 2021 Feb 12

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Hong-Ou-Mandel interference is a cornerstone of optical quantum technologies. We explore both theoretically and experimentally how unwanted multiphoton components of single-photon sources affect the interference visibility, and find that the overlap between the single photons and the noise photons significantly impacts the interference. We apply our approach to quantum dot single-photon sources to access the mean wave packet overlap of the single-photon component. This study provides a consistent platform with which to diagnose the limitations of current single-photon sources on the route towards the ideal device.

Citation

H Ollivier, S E Thomas, S C Wein, I Maillette de Buy Wenniger, N Coste, J C Loredo, N Somaschi, A Harouri, A Lemaitre, I Sagnes, L Lanco, C Simon, C Anton, O Krebs, P Senellart. Hong-Ou-Mandel Interference with Imperfect Single Photon Sources. Physical review letters. 2021 Feb 12;126(6):063602

PMID: 33635709

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