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.

CCD-based detection of quantum spatial correlation of twin beams for high-sensitivity imaging

BRAMBILLA, ENRICO;Caspani C.;DI TRAPANI, PAOLO
2007-01-01

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.
2007
Quantum Communications and Quantum Imaging V
9780819468581
Quantum Communications and Quantum Imaging V
San Diego, CA; United States
26 August 2007 through 28 August 2007
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/1788529
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