Li Shujing, Yang Xudong, Cao Xuemin, Zhang Chunhong, Xie Changde, Wang Hai
The State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, People's Republic of China.
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。
