Enhanced cross-phase modulation based on a double electromagnetically induced transparency in a four-level tripod atomic system

被引：146

作者：

Li, Shujing ^{[1
]}

Yang, Xudong ^{[1
]}

Cao, Xuemin ^{[1
]}

Zhang, Chunhong ^{[1
]}

Xie, Changde ^{[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：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.101.073602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report experimental observations on the simultaneous electromagnetically induced transparency (EIT) effects for probe and trigger fields (double EIT) as well as the enhanced cross-phase modulation (XPM) between the two fields in a four-level tripod EIT system of the D1 line of Rb-87 atoms. The XPM coefficients (larger than 2x10(-5) cm(2)/W) and the accompanying transmissions (higher than 60%) are measured at a slight detuning of the probe field from the exact EIT-resonance condition. The system and enhanced cross-Kerr nonlinearities presented here can be applied to quantum information processes.

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页数：4

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