期刊
APPLIED PHYSICS LETTERS
卷 94, 期 20, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3139768
关键词
brightness; light sources; optical filters; optical parametric devices; quantum optics
资金
- Deutsche Forschungsgemeinschaft DFG [BE2224/5]
- Deutsche Telekom Stiftung
We demonstrate a narrow-band single-photon source based on cavity-enhanced parametric downconversion for efficient coupling to atomic quantum memories. Selecting a single longitudinal cavity mode by spectral filtering, we achieve a spectral brightness of similar to 330 biphotons/(s mW MHz) and an overall bandwidth of 2.7 MHz, which suits the width of naturally broadened transitions in alkali gases like rubidium or cesium.
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