Physics – Quantum Physics
Scientific paper
2004-04-15
J. Phys. A 37, 7341 (2004)
Physics
Quantum Physics
15 pages, notes about strong local oscillator condition and on imperfections added, abstract changed slightly
Scientific paper
10.1088/0305-4470/37/29/010
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.
Sanders Barry C.
Tyc Tomas
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