利用周期性极化磷酸钛氧钾产生频率非简并、偏振纠缠光子对的明亮单空间模光源。

Bright, single-spatial-mode source of frequency non-degenerate, polarization-entangled photon pairs using periodically poled KTP.

作者信息

Pelton Matthew, Marsden Philip, Ljunggren Daniel, Tengner Maria, Karlsson Anders, Fragemann Anna, Canalias Carlota, Laurell Fredrik

出版信息

Opt Express. 2004 Jul 26;12(15):3573-80. doi: 10.1364/opex.12.003573.

DOI:10.1364/opex.12.003573

PMID:19483888

Abstract

We use two perpendicular crystals of periodically-poled KTP to directly generate polarization-entangled photon pairs, the majority of which are emitted into a single Gaussian spatial mode. The signal and idler photons have wavelengths of 810 nm and 1550 nm, respectively, and the photon-pair generation rate is 1.2x107 sec-1 for a pump power of 62 mW. The apparatus is compact, flexible, and easily to use.

摘要

我们使用两块周期性极化的磷酸钛氧钾（KTP）垂直晶体直接产生偏振纠缠光子对，其中大部分光子对被发射到单一高斯空间模式中。信号光子和闲频光子的波长分别为810纳米和1550纳米，在泵浦功率为62毫瓦时，光子对产生率为1.2×10⁷ 秒⁻¹。该装置结构紧凑、灵活且易于使用。