摘要
基于Brańczyk的理论工作,考虑干涉滤波片的谱函数对干涉结果的影响,推导出更加普适的Hong-Ou-Mandel干涉符合概率公式,从而增加干涉实验的可操控性.用带宽不同的干涉滤波片系统研究了Hong-Ou-Mandel干涉现象,得到与理论预测相吻合的实验结果.实验数据和理论仿真均显示,通过使用不同带宽的干涉滤波片可以灵活调节干涉曲线,以获得较高的平台符合计数率和干涉可见度.实验中测得的干涉可见度均高于97%,最高达到99.9%,验证了实验方案的可靠性.研究结果对于同类的量子干涉实验也具有参考价值.
Based on Braczyk's theoretical work,the spectral function of interference filter is considered,and a more conventional formula of Hong-Ou-Mandel interference coincidence probability is derived,which improves the controllability of interference experiment.The HOM interference is studied experimentally by using interference filters with different bandwidths,and the experimental results are close to the theoretical prediction.The comparison of experimental data and theoretical simulation shows that the interference filter with different bandwidth can flexibly adjust the interference curve and obtain higher coincidence counting rate and interference visibility.The interference visibility measured in the experiment is higher than 97%,and the best case is 99.9%,which shows the reliability of the experimental scheme.The study could provide references for similar emperiments on quantum interferences.
作者
孙涛
汪垟
李剑
王琴
SUN Tao;WANG Yang;LI Jian;WANG Qin(Institute of Quantum Information Technology,College of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing,210003,China;Key Lab of Broadband Wireless Communication and Sensor Network Technology,Ministry of Education,College of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing,210003,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2019年第4期43-49,共7页
Acta Photonica Sinica
基金
国家重点研发计划(Nos.2018YFA0306400
2017YFA0304100)
国家自然科学基金(Nos.61475197
11774180
61590932)~~
关键词
量子光学
双光子过程
量子干涉装置
光子
可见度
Quantum optics
Two photon processes
Quantum interference devices
Photons
Visibility
