Enhanced cross-Kerr nonlinearity via electromagnetically induced transparency in a four-level tripod atomic system

被引：47

作者：

Yang, Xudong ^{[1
]}

Li, Shujing ^{[1
]}

Zhang, Chunhong ^{[1
]}

Wang, Hai ^{[1
]}

机构：

[1] Shanxi Univ, Inst Optoelect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2009年 / 26卷 / 07期

基金：

美国国家科学基金会;

关键词：

OPTICAL QUANTUM COMPUTATION; RUBIDIUM ATOMS; GROUP-VELOCITY; LIGHT; COHERENCE; VAPOR; PHOTONS; GAS;

D O I：

10.1364/JOSAB.26.001423

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate, both theoretically and experimentally, the cross-Kerr nonlinearity generated in a four-level tripod system in the Rb-87 D1 line. The system exhibits simultaneous electromagnetically induced transparency (EIT) windows for two weak (probe and trigger) fields and the enhanced cross-Kerr nonlinearity by EIT. The cross-Kerr nonlinear phase shifts for probe (trigger) field are measured at several different intensities of trigger (probe) field. The results show that large cross-phase modulation (XPM) coefficients can be achieved at low light intensities. (C) 2009 Optical Society of America

引用

页码：1423 / 1434

页数：12

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