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Operational formulation of homodyne detection

Tomáš Tyc1,4 and Barry C Sanders2,3

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We obtain the standard quadrature-phase positive operator-valued measure (POVM) for homodyne detection directly and rigorously from the POVM for photon counting without directly employing the mean field approximation for the local oscillator. In addition, we obtain correction terms for the quadrature-phase POVM that are applicable for relatively weak local oscillator field strengths and typical signal states.


PACS

42.50.Ar Photon statistics and coherence theory

42.50.Dv Quantum state engineering and measurements

MSC

81V80 Quantum optics

Subjects

Optics, quantum optics and lasers

Dates

Issue 29 (23 July 2004)

Received 19 April 2004, in final form 3 June 2004

Published 7 July 2004



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