A quantum description of the beam splitter

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Published under licence by IOP Publishing Ltd
, , Citation A Luis and L L Sanchez-Soto 1995 Quantum Semiclass. Opt. 7 153 DOI 10.1088/1355-5111/7/2/005

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1 Dept. de Opt., Univ. Complutense de Madrid, Spain

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Abstract

The unitary operator representing the action of a linear lossless passive beam splitter is presented. The derivation is based on an elementary group-theoretical approach that allows us to understand this action in terms of the Stokes operators for the incident beam. This operator is used to illustrate with some examples the coupling of noise in the beam splitter.

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