中国物理B ›› 2012, Vol. 21 ›› Issue (10): 104204-104204.doi: 10.1088/1674-1056/21/10/104204
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
刘勤, 冯晋霞, 李宏, 焦月春, 张宽收
Liu Qin (刘勤), Feng Jin-Xia (冯晋霞), Li Hong (李宏), Jiao Yue-Chun (焦月春), Zhang Kuan-Shou (张宽收)
摘要: We report on the generation of a squeezing vacuum at 1.55 μm using an optical parametric amplifier based on periodically poled LiNbO3. Using three specifically designed narrow linewidth mode cleaners as the spatial mode and noise filter of the laser at 1.55 μm and 775 nm, the squeezed vacuum of up to 3.0 dB below the shot noise level at 1.55 μm is experimentally obtained. This system is compatible with standard telecommunication optical fibers, and will be useful for continuous variable long-distance quantum communication and distributed quantum computing.
中图分类号: (Quantum state engineering and measurements)