啁啾纠缠光子对的产生与压缩研究进展  

Research progress on generation and compression of chirped biphotons

作　　者：李百宏[1] 赵鹏达 刘仡锟 LI Baihong;ZHAO Pengda;LIU Yikun(College of Sciences,Xi’an University of Science and Technology,Xi’an 710054,China)

机构地区：[1]西安科技大学理学院,陕西西安710054

出　　处：《西安科技大学学报》2021年第5期895-903,共9页Journal of Xi’an University of Science and Technology

基　　金：国家自然科学基金项目(12074309,11504292);陕西省科技创新团队计划(2019TD-026);陕西省自然科学基础研究计划项目(2019JM-346);西安科技大学优秀青年基金(2019YQ2-13);西安科技大学博士后启动基金项目(6310121501)。

摘　　要：利用连续激光泵浦啁啾准相位匹配的非线性晶体(或波导),通过自发参量下转换过程可以产生超宽带频谱的纠缠光子对,称为啁啾纠缠光子对。由于其具有超宽带频谱特性因而被广泛应用于高精度量子光学相干层析、宽带量子信息处理等多个领域。但由于同时产生频率二次相位因子,导致双光子关联时间被拓宽,从而制约其在量子度量衡、量子平板印刷术及量子时钟同步等相关领域的应用,因此需要对其关联时间进行压缩,而压缩的关键是要实现相位补偿。综述啁啾纠缠光子对的产生方法和压缩方法及相关的理论和实验研究进展,对不同的压缩方法进行比较分析并总结各自的优缺点。Chirped biphotons generated by spontaneous parametric down-conversion in chirped quasi-phase matching crystal(or waveguide)with CW laser have found wide applications in high-resolution quantum optical coherence tomography and wide-bandwidth quantum information processing due to their ultrabroadband frequency spectra.However,their correlation times are broadened because of the quadratic frequency dependence of the phase factor,it is therefore limited for their applications in quantum metrology,quantum lithography and quantum clock synchronization.It is necessary to compress their correlation times.The key point of compression is phase compensation.In this paper,the background of the generation and compression of chirped biphotons is reviewed,and the related theoretical and experimental research progress is summarized.Moreover,the different compression methods are compared and analyzed,and their advantages and disadvantages are also summarized.

关 键 词：啁啾纠缠光子对 产生 压缩 量子光学 

分 类 号：O431.2[机械工程—光学工程]