QUANTUM PHASE FROM PHOTON-COUNTING AND THE Q-FUNCTION

Authors
FREYBERGER M VOGEL K SCHLEICH W
Citation
M. Freyberger et al., QUANTUM PHASE FROM PHOTON-COUNTING AND THE Q-FUNCTION, Quantum optics, 5(2), 1993, pp. 65-67
Citations number
NO
Categorie Soggetti
Optics,"Physics, Applied
Journal title
Quantum optics → ACNP
ISSN journal
09548998
Volume
5
Issue
2
Year of publication
1993
Pages
65 - 67
Database
ISI
SICI code
0954-8998(1993)5:2<65:QPFPAT>2.0.ZU;2-F
Abstract
We present an exact expression for the joint count probability in an e ight-port homodyne detector used in a recent proposal for a phase meas urement by Noh et al. For a strong local oscillator we relate this joi nt count probability to the Q-function of the arbitrary input state. T his Q-function integrated over radius is the phase distribution corres ponding to the phase operators of Noh et al.