Homodyne measurement of the average photon number

Webb, J. G., Ralph, T. C. and Huntington, E. H. (2006) Homodyne measurement of the average photon number. Physical Review A, 73 3: 033808-1-033808-7. doi:10.1103/PhysRevA.73.033808

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Author Webb, J. G.
Ralph, T. C.
Huntington, E. H.
Title Homodyne measurement of the average photon number
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2006
Sub-type Article (original research)
DOI 10.1103/PhysRevA.73.033808
Open Access Status File (Publisher version)
Volume 73
Issue 3
Start page 033808-1
End page 033808-7
Total pages 7
Editor B. Crasemann
Place of publication College Pk
Publisher American Physical Society
Collection year 2006
Language eng
Subject C1
780102 Physical sciences
240402 Quantum Optics and Lasers
02 Physical Sciences
020502 Lasers and Quantum Electronics
Abstract We describe a scheme for measurement of the mean photon flux at an arbitrary optical sideband frequency using homodyne detection. Experimental implementation of the technique requires an acousto-optic modulator in addition to the homodyne detector, and does not require phase locking. The technique exhibits polarization and frequency and spatial mode selectivity, as well as much improved speed, resolution, and dynamic range when compared to linear photodetectors and avalanche photodiodes, with potential application to quantum-state tomography and information encoding using an optical frequency basis. Experimental data also support a quantum-mechanical description of vacuum noise.
Keyword Optics
Physics, Atomic, Molecular & Chemical
Q-Index Code C1

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Created: Wed, 15 Aug 2007, 08:48:48 EST