Multiport Cyclic Interferometer For Genuine n-photon Indistinguishability Assessment

Riccardo Albiero; Riccardo Albiero; Mathias Pont; Sarah E. Thomas; Nicolò Spagnolo; Francesco Ceccarelli; Giacomo Corrielli; Alexandre Brieussel; Niccolò Somaschi; Hêlio Huet; Abdelmounaim Harouri; Aristide Lemaître; Isabelle Sagnes; Nadia Belabas; Fabio Sciarrino; Roberto Osellame; Pascale Senellart; Andrea Crespi; Andrea Crespi

Conference on Lasers and Electro-Optics/Europe (CLEO/Europe 2023) and European Quantum Electronics Conference (EQEC 2023)
Technical Digest Series (Optica Publishing Group, 2023),
paper ea_8_1

Multiport Cyclic Interferometer For Genuine n-photon Indistinguishability Assessment

Riccardo Albiero, Mathias Pont, Sarah E. Thomas, Nicolò Spagnolo, Francesco Ceccarelli, Giacomo Corrielli, Alexandre Brieussel, Niccolò Somaschi, Hêlio Huet, Abdelmounaim Harouri, Aristide Lemaître, Isabelle Sagnes, Nadia Belabas, Fabio Sciarrino, Roberto Osellame, Pascale Senellart, and Andrea Crespi

European Quantum Electronics Conference 2023

Munich Germany
26–30 June 2023
ISBN: 979-8-3503-4599-5

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Nonclassical states of light (ea_8)

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R. Albiero, M. Pont, S. E. Thomas, N. Spagnolo, F. Ceccarelli, G. Corrielli, A. Brieussel, N. Somaschi, H. Huet, A. Harouri, A. Lemaître, I. Sagnes, N. Belabas, F. Sciarrino, R. Osellame, P. Senellart, and A. Crespi, "Multiport Cyclic Interferometer For Genuine n-photon Indistinguishability Assessment," in Conference on Lasers and Electro-Optics/Europe (CLEO/Europe 2023) and European Quantum Electronics Conference (EQEC 2023), Technical Digest Series (Optica Publishing Group, 2023), paper ea_8_1.

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Abstract

The generation of quantum states of many indistinguishable photons is a crucial resource for the realization of photonic computer architectures that can enable a quantum speedup and create fault-tolerant multi-party quantum networks. On the experimental side, the measurement of indistinguishability for a multi-photon state is a challenging task. In the case of a two-photon state, the photon indistinguishability is fully assessed by the visibility of the interference fringe of the Hong-Ou-Mandel (HOM) interference experiment on a balanced beam splitter. However, pairwise HOM experiments are unable to completely determine the multi-photon indistinguishability when more than two photons are involved [1-2].

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