期刊
APPLIED PHYSICS LETTERS
卷 101, 期 22, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4768288
关键词
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资金
- European Union [912/2009/EC, IND06-MIQC]
- MIUR, FIRB [RBFR10YQ3H, RBFR10UAUV]
- Compagnia di San Paolo
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(7), 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. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4768288]
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