Collinear source of polarization-entangled photon pairs at nondegenerate wavelengths

被引：58
|
作者：
Trojek, P. [1 ]
Weinfurter, H.
机构：
[1] Univ Munich, Dept Phys, D-80799 Munich, Germany
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 21期
关键词：
D O I：
10.1063/1.2924280
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on a simple but highly efficient source of polarization-entangled photon pairs at nondegenerate wavelengths. The fully collinear configuration of the source enables very high coupling efficiency into a single optical mode and allows the use of long nonlinear crystals. With optimized dispersion compensation, it is possible to use a free-running laser diode as pump source and to reach an entanglement fidelity of 99.4% at rates as high as 27 000 pairs/s/mW of pump power. (C) 2008 American Institute of Physics.
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