量子光学学报, 2017, 23 (2): 99, 网络出版: 2017-07-05
光通信波段低频压缩态光场的实验制备
Generation of a Low-frequency Squeezed States at Telecommunication Wavelength
摘要
本文利用周期极化磷酸氧钛钾晶体构成的半整块结构简并光学参量振荡器实验制备了连续变量光通信波段低频压缩态光场。光学参量振荡器的阈值功率为210 mW。当775 nm抽运光场功率为130 mW时,在分析频段50 kHz~900 kHz范围内获得真空压缩态光场。在200 kHz分析频率处,压缩态光场的最大压缩度达50 dB;在最低分析频率50 kHz处,压缩态光场的压缩度为20 dB。该低频压缩态光场可为基于光纤的量子精密测量提供量子光源。
Abstract
A telecommunication wavelength low-frequency squeezed light for continuous variable at telecommunication wavelength is demonstrated from a semi-monolithic degenerate optical parametric oscillator (DOPO) based on a periodically poled KTP crystal. The threshold power for DOPO is 210 mW. The low-frequency squeezed light is generated with the pump light at 775 nm of 130 mW at analysis frequency range from 50 kHz~900 kHz. A maximum squeeze degree of 50 dB is obtained at analysis frequency of 200 kHz. A 20 dB squeeze light is obtained at the lowest analysis frequency of 50 kHz.
要立婷, 冯晋霞, 高英豪, 张宽收. 光通信波段低频压缩态光场的实验制备[J]. 量子光学学报, 2017, 23(2): 99. YAO Li-ting, FENG Jin-xia, GAO Ying-hao, ZHANG Kuan-shou. Generation of a Low-frequency Squeezed States at Telecommunication Wavelength[J]. Acta Sinica Quantum Optica, 2017, 23(2): 99.