Measurement of the transverse spatial quantum state of light at the single-photon level
Optics Letters, Vol. 30, Issue 24, pp. 3365-3367 (2005)
http://dx.doi.org/10.1364/OL.30.003365
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Abstract
We present an experimental method to measure the transverse spatial quantum state of an optical field in coordinate space at the single-photon level. The continuous-variable measurements are made with a photon-counting, parity-inverting Sagnac interferometer based on all-reflecting optics. The technique provides a large numerical aperture without distorting the shape of the wavefront, does not introduce astigmatism, and allows for characterization of fully or partially coherent optical fields at the single-photon level. Measurements of the transverse spatial Wigner functions for highly attenuated coherent beams are presented and compared with theoretical predictions.
© 2005 Optical Society of America
OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(110.1650) Imaging systems : Coherence imaging
(270.1670) Quantum optics : Coherent optical effects
ToC Category:
Quantum Optics
Citation
Brian J. Smith, Bryan Killett, M. G. Raymer, I. A. Walmsley, and K. Banaszek, "Measurement of the transverse spatial quantum state of light at the single-photon level," Opt. Lett. 30, 3365-3367 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-24-3365
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