量子光频梳产生实验研究  

Research on Experimental Generation of Quantum Optical Frequency Comb

作　　者：王少锋[1,2] 项晓 董瑞芳[1,2] 刘涛 张首刚[1,2] Wang Shaofeng;Xiang Xiao;Dong Ruifang;Liu Tao;Zhang Shougang(Key Laboratory of Time and Frequency Primary Standards,National Time Service Center,Chinese Academy of Sciences,Xi＇an,Shaanxi 710600,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院国家授时中心时间频率基准重点实验室,陕西西安710600 [2]中国科学院大学天文与空间科学学院,北京100049

出　　处：《光学学报》2018年第10期357-361,共5页Acta Optica Sinica

基　　金：国家自然科学基金(11174282;91336108;91636101);中央组织部"青年拔尖人才支持计划"(组厅字[2013]33号);中国科学院科研装备研制项目;中国科学院前沿科学重点研究计划(QYZDB-SSWSLH-007)

摘　　要：利用中心波长为815nm的锁模飞秒激光的二次谐波抽运单共振同步抽运光学参量振荡器(SPOPO),实现了压缩真空态量子光频梳的产生。通过平衡零拍探测系统,测得0阶超模脉冲的压缩度为3dB,实际压缩度为5.15dB,理论模型得到的压缩度与实验结果吻合良好。理论分析了单共振SPOPO的输出耦合镜透过率、内腔损耗及探测装置效率对压缩度的影响,为优化量子光频梳的实验测量提供了指导。The generation of squeezed vacuum quantum optical frequency comb is realized from a singly resonant synchronously pumped optical parametric oscillator（SPOPO）pumped by the second harmonic of a mode-locked femtosecond laser with a central wavelength of 815 nm.With the balanced homodyne detection system,the squeezing degree of the zero-order super-mode pulse is 3 dB and the real squeezing degree is 5.15 dB,which indicates that the experimental result is well consistent with that obtained by the theoretical model.The effects of the transmissivity of the output coupling mirror and the loss of the intra-cavity for the singly resonant SPOPO and the efficiency of the detection device on the squeezing degree are theoretically analyzed,which provides a guidance for the optimization of the experimental measurement of the quantum optical combs.

关 键 词：量子光学 压缩态 同步抽运光学参量振荡器 量子光频梳 多模非经典光源 

分 类 号：O431.2[机械工程—光学工程]