基于四能级三脚架原子系统中双电磁诱导透明的增强型交叉相位调制
Enhanced cross-phase modulation based on a double electromagnetically induced transparency in a four-level tripod atomic system.
作者信息
Li Shujing, Yang Xudong, Cao Xuemin, Zhang Chunhong, Xie Changde, Wang Hai
机构信息
The State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, People's Republic of China.
出版信息
Phys Rev Lett. 2008 Aug 15;101(7):073602. doi: 10.1103/PhysRevLett.101.073602. Epub 2008 Aug 13.
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 87Rb atoms. The XPM coefficients (larger than 2 x 10(-5) cm2/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.
我们报告了在87Rb原子D1线的四能级三脚架型电磁诱导透明（EIT）系统中，对探测场和触发场的同时电磁诱导透明（EIT）效应（双EIT）以及这两个场之间增强的交叉相位调制（XPM）的实验观测结果。在探测场与精确的EIT共振条件稍有失谐的情况下，测量了XPM系数（大于2×10⁻⁵ cm²/W）和伴随的透射率（高于60%）。这里展示的系统和增强的交叉克尔非线性可应用于量子信息过程。
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