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arXiv · 1305.3188

General rules for bosonic bunching in multimode interferometers

N. Spagnolo·C. Vitelli·L. Sansoni·E. Maiorino·P. Mataloni·F. Sciarrino·D. J. Brod·E. F. Galvao·A. Crespi·R. Ramponi·R. Osellame
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Abstract

We perform a comprehensive set of experiments that characterize bosonic bunching of up to 3 photons in interferometers of up to 16 modes. Our experiments verify two rules that govern bosonic bunching. The first rule, obtained recently in [1,2], predicts the average behavior of the bunching probability and is known as the bosonic birthday paradox. The second rule is new, and establishes a n!-factor quantum enhancement for the probability that all n bosons bunch in a single output mode, with respect to the case of distinguishable bosons. Besides its fundamental importance in phenomena such as Bose-Einstein condensation, bosonic bunching can be exploited in applications such as linear optical quantum computing and quantum-enhanced metrology.

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N. Spagnolo, C. Vitelli, L. Sansoni, E. Maiorino, P. Mataloni, F. Sciarrino, D. J. Brod, E. F. Galvao, A. Crespi, R. Ramponi, R. Osellame. 2013-09-26. General rules for bosonic bunching in multimode interferometers. https://doi.org/10.1103/physrevlett.111.130503

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