期刊
OPTICS EXPRESS
卷 21, 期 23, 页码 27641-27651出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.21.027641
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资金
- Swiss National Centre of Competence in Research Quantum Science and Technology (QSIT) project
Multi-photon and quantum communication experiments such as loophole-free Bell tests and device independent quantum key distribution require entangled photon sources which display high coupling efficiency. In this paper we put forward a simple quantum theoretical model which allows the experimenter to design a source with high pair coupling efficiency. In particular we apply this approach to a situation where high coupling has not been previously obtained: we demonstrate a symmetric coupling efficiency of more than 80% in a highly frequency non-degenerate configuration. Furthermore, we demonstrate this technique in a broad range of configurations, i.e. in continuous wave and pulsed pump regimes, and for different nonlinear crystals. (C) 2013 Optical Society of America
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