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Conference on Lasers and Electro-Optics

Two-Photon Interference and Commutation Relations

Brian J. Smith, Nicholas L. Thomas-Peter, Ian A. Walmsley

Published Jan 1, 2010• 0 citations
Publisher

Abstract

We experimentally demonstrate spectral-temporal two-photon interference at a beam splitter with pure-state separable photons. This shows the bosonic nature of light, characterizing creation and annihilation operators.
DOI
10.1364/qels.2010.qfa6

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We propose an experiment to directly prove the commutation relation between bosonic annihilation and creation operators, based on the recent experimental success in single-photon subtraction and addition. We devise a single-photon interferometer to realize coherent superpositions of two sequences of photon addition and subtraction. Depending on the interference outcome, the commutation relation is directly proven or a highly nonclassical state is produced. Experimental imperfections are assessed to show that the realization of the scheme is highly feasible.