Beamlike twin-photon generation by use of type II parametric downconversion

被引：82

作者：

Takeuchi, S ^{[1
]}

机构：

[1] Hokkaido Univ, Res Inst Elect Sci,Japan Sci & Technol Corp, Precursory Res Embryon Sci & Technol Project, Kita Ku, Sapporo, Hokkaido 0600812, Japan

来源：

OPTICS LETTERS | 2001年 / 26卷 / 11期

关键词：

D O I：

10.1364/OL.26.000843

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Beamlike twin-photon generation by use of type II spontaneous parametric downconversion is demonstrated. The intensity distribution of each beam is round, and the emission angle is very small (0.9 degrees). As a result, a high coincidence-count rate per unit of pump power was recorded. The ratio of coincidence-count rate to single-count rate was estimated to be 80% in this experiment. These features suggest that this method is useful for generation of a single-photon state and is applicable to bright, entangled twin-photon sources. (C) 2001 Optical Society of America.

引用

页码：843 / 845

页数：3

共 17 条

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