Collinear source of polarization-entangled photon pairs at nondegenerate wavelengths

被引：60

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：

Crystal structure - Polarization - Semiconductor lasers - Wavelength;

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.

引用

页数：3