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Proceedings Paper

CCD-based detection of quantum spatial correlation of twin beams for high-sensitivity imaging
Author(s): O. Jedrkiewicz; G. Molina Terriza; E. Brambilla; L. Caspani; A. Gatti; L. A. Lugiato; P. Di Trapani
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Paper Abstract

We review and compare the results of quantum spatial correlation measurements in parametric down-conversion in the high-gain pulsed regime, with preliminary measurements performed in the low-gain cw-pumped regime. The diagnostics is based on a high quantum efficiency CCD camera, and in the second case the radiation pattern is recorded after temporal integration of the "single-photon" spatial distribution. The effect of the detected number of temporal modes on the accessibility of the sub-shot noise regime is discussed, together with the identification of suitable regimes for weak image detection.

Paper Details

Date Published: 3 October 2007
PDF: 15 pages
Proc. SPIE 6710, Quantum Communications and Quantum Imaging V, 671005 (3 October 2007); doi: 10.1117/12.733886
Show Author Affiliations
O. Jedrkiewicz, NFM-CNR-CNISM, Univ. dell'Insubria (Italy)
G. Molina Terriza, ICFO-Institut de Ciences Fotoniques (Spain)
E. Brambilla, NFM-CNR-CNISM, Univ. dell'Insubria (Italy)
L. Caspani, NFM-CNR-CNISM, Univ. dell'Insubria (Italy)
A. Gatti, NFM-CNR-CNISM, Univ. dell'Insubria (Italy)
L. A. Lugiato, NFM-CNR-CNISM, Univ. dell'Insubria (Italy)
P. Di Trapani, NFM-CNR-CNISM, Univ. dell'Insubria (Italy)
Vilnius Univ. (Lithuania)


Published in SPIE Proceedings Vol. 6710:
Quantum Communications and Quantum Imaging V
Ronald E. Meyers; Yanhua Shih; Keith S. Deacon, Editor(s)

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