Phase-stable source of polarization-entangled photons using a polarization Sagnac interferometer

被引：312

作者：

Kim, T ^{[1
]}

Fiorentino, M ^{[1
]}

Wong, FNC ^{[1
]}

机构：

[1] MIT, Elect Res Lab, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW A | 2006年 / 73卷 / 01期

关键词：

Bandwidth - Interferometers - Light polarization - Quantum theory - Wave interference;

D O I：

10.1103/PhysRevA.73.012316

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a simple, robust, and ultrabright parametric down-conversion source of polarization-entangled photons based on a polarization Sagnac interferometer. Bidirectional pumping in type-II phase-matched periodically poled KTiOPO4 yields a measured flux of 5000 polarization-entangled pairs/s/mW of pump power in a 1-nm bandwidth at 96.8% quantum-interference visibility. The common-path arrangement of the Sagnac interferometer eliminates the need for phase stabilization for the biphoton output state.

引用

页数：5