新型量子雷达中的光源研究

量子电子学报 ›› 2020, Vol. 37 ›› Issue (6): 659-668.

新型量子雷达中的光源研究

王刚1, 任昌亮2∗

1 重庆邮电大学光电工程学院, 重庆400065; 2 中国科学院重庆绿色智能技术研究院, 重庆400714

收稿日期:2020-08-31 修回日期:2020-09-14 出版日期:2020-11-28 发布日期:2020-11-28
通讯作者: E-mail: clren@mail.ustc.edu.cn E-mail:884813436@qq.com
作者简介:王刚( 1997 - ), 四川广安人, 硕士, 主要从事量子光学方面的研究。E-mail: 884813436@qq.com
基金资助:
Supported by National Key R & D Program of China (国家重点研究研发计划, 2017YFA0305200), Youth Innovation Promotion Association (青年创新促进会, 2015317), National Natural Science Foundation of China (国家自然科学基金, 11605205), Foundation of Key Laboratory of Micro Magnetic Resonance, Chinese Academy of Sciences and Key Laboratory of Chinese Academy of Sciences (中国科学院微观磁共振重点实验室基金和中国科学院重点实验室基金)

Research on light source in new quantum radar

WANG Gang1, REN Changliang2∗

1 School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China; 2 Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China

Received:2020-08-31 Revised:2020-09-14 Published:2020-11-28 Online:2020-11-28
Contact: gang wang E-mail:884813436@qq.com

摘要/Abstract

摘要： 近期提出的新型量子雷达利用纠缠光子的量子纠缠效应实现三维量子增强, 对该新型量子雷达方案中的光源进行了初步分析, 并讨论了其可能实现的方案。新型量子雷达方案中的光源在频率和动量上都是正相关的。以两光子态为例, 首先对单独考虑频率或动量正相关态的制备进行了研究, 并在此基础上进一步讨论了频率和动量都正相关的纠缠光子源的制备。数值模拟结果表明, 利用强聚焦下的脉冲抽运光, 通过自发参量下转换过程可以制备频率和动量都正相关的纠缠光子源。

关键词: 激光技术, 量子纠缠, 频率和动量正相关, 自发参量下转换, 强聚焦

Abstract: The light source mentioned in recent quantum radar scheme, in which the quantum entanglement effect of entangled photons is used to realize three-dimensional quantum enhancement, has been analyzed and the possible solution is also discussed. In the new quantum radar scheme, positive correlation in frequency and transverse momentum can be used to realize three-dimensional quantum enhancement. Taking two-photon states as an example, firstly, preparation of the positively correlated state of frequency or momentum is investigated separately, and then on this basis, the preparation of entangled photon sources with positive correlation of both frequency and momentum is further discussed. Numerical simulation shows that through a spontaneous parametric down conversion process, the entangled photon source with positive correlation in frequency and transverse momentum can be generated by using a tightly focused pulsed pump light.

Key words: laser techniques, quantum entanglement, positive correlation between frequency and momentum; spontaneous parametric down-conversion, tight focusing

中图分类号:

TN248

王刚, 任昌亮∗. 新型量子雷达中的光源研究[J]. 量子电子学报, 2020, 37(6): 659-668.

WANG Gang, REN Changliang∗. Research on light source in new quantum radar[J]. Chinese Journal of Quantum Electronics, 2020, 37(6): 659-668.

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