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Title: Homodyne measurement of the average photon number

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.

Authors:
;  [1];  [2]
  1. Centre for Quantum Computer Technology, School of Information Technology and Electrical Engineering, University College, The University of New South Wales, Canberra, Australian Capital Territory 2600 (Australia)
  2. Centre for Quantum Computer Technology, Department of Physics, The University of Queensland, St Lucia, Queensland 4072 (Australia)
Publication Date:
OSTI Identifier:
20786988
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.73.033808; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; DETECTION; NOISE; OPTICS; PHOTODETECTORS; PHOTODIODES; PHOTONS; POLARIZATION; POTENTIALS; QUANTUM MECHANICS; RESOLUTION; TOMOGRAPHY; VELOCITY

Citation Formats

Webb, J. G., Huntington, E. H., and Ralph, T. C. Homodyne measurement of the average photon number. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.0.
Webb, J. G., Huntington, E. H., & Ralph, T. C. Homodyne measurement of the average photon number. United States. doi:10.1103/PHYSREVA.73.0.
Webb, J. G., Huntington, E. H., and Ralph, T. C. Wed . "Homodyne measurement of the average photon number". United States. doi:10.1103/PHYSREVA.73.0.
@article{osti_20786988,
title = {Homodyne measurement of the average photon number},
author = {Webb, J. G. and Huntington, E. H. and Ralph, T. C.},
abstractNote = {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.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
number = 3,
volume = 73,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}