Low-light-level photon switching by quantum interference

被引：67

作者：

Chen, YF ^{[1
]}

Tsai, ZH ^{[1
]}

Liu, YC ^{[1
]}

Yu, IA ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

来源：

OPTICS LETTERS | 2005年 / 30卷 / 23期

关键词：

D O I：

10.1364/OL.30.003207

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report an experimental demonstration of low-light-level photon switching by quantum interference in laser-cooled Rb-87 atoms. A resonant probe pulse with an energy per unit area of one photon per,lambda(2)/2 pi propagates through the optically thick atoms. Its energy transmittance is greater than 63%, or a loss of less than e(-1), because of the effect of electromagnetically induced transparency. In the presence of a switching pulse with an energy per unit area of 1.4 photons per lambda(2)/2 pi, the energy transmittance of the same probe pulse becomes less than 37%, or e(-1). This substantial reduction of probe transmittance caused by switching photons may lead to potential applications in single-photon-level nonlinear optics and manipulation of quantum information. (c) 2005 Optical Society of America.

引用

页码：3207 / 3209

页数：3

共 14 条

[1] Stationary pulses of light in an atomic medium [J].