Low noise single-photon sources are a critical element for quantum technologies. We present a heralded single-photon source with an extremely low level of residual background photons, by implementing low-jitter detectors and electronics and a fast custom-made pulse generator controlling an optical shutter (a LiNbO3 waveguide optical switch) on the output of the source. This source has a second-order autocorrelation g(2)(0) = 0.005, and an output noise factor (defined as the ratio of the number of noise photons to total photons at the source output channel) of 0.25(1)%. These are the best performance characteristics reported to date.

An extremely low-noise heralded single-photon source: A breakthrough for quantum technologies

DELLA FRERA, ADRIANO;TOSI, ALBERTO;BAHGAT SHEHATA, ANDREA;SCARCELLA, CARMELO;GULINATTI, ANGELO;GHIONI, MASSIMO ANTONIO;
2012

Abstract

Low noise single-photon sources are a critical element for quantum technologies. We present a heralded single-photon source with an extremely low level of residual background photons, by implementing low-jitter detectors and electronics and a fast custom-made pulse generator controlling an optical shutter (a LiNbO3 waveguide optical switch) on the output of the source. This source has a second-order autocorrelation g(2)(0) = 0.005, and an output noise factor (defined as the ratio of the number of noise photons to total photons at the source output channel) of 0.25(1)%. These are the best performance characteristics reported to date.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/698717
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