Acousto-optic modulator-based bi-frequency interferometer for quantum technology  

作　　者：李文奇 邓琦琦 郭学石 李小英 Wenqi Li;Qiqi Deng;Xueshi Guo;Xiaoying Li(College of Precision Instrument and Opto-Electronics Engineering,Key Laboratory of Opto-Electronics Information Technology,Ministry of Education,Tianjin University,Tianjin 300072,China)

机构地区：[1]College of Precision Instrument and Opto-Electronics Engineering,Key Laboratory of Opto-Electronics Information Technology,Ministry of Education,Tianjin University,Tianjin 300072,China

出　　处：《Chinese Optics Letters》2024年第2期186-191,共6页中国光学快报（英文版）

基　　金：supported in part by the National Natural Science Foundation of China(Nos.12004279 and 12074283)。

摘　　要：We demonstrate a high-performance acousto-optic modulator-based bi-frequency interferometer,which can realize either beating or beating free interference for a single-photon level quantum state.Visibility and optical efficiency of the interferometer are(99.5±0.2)%and(95±1)%,respectively.The phase of the interferometer is actively stabilized by using a dithering phase-locking scheme,where the phase dithering is realized by directly driving the acousto-optic modulators with a specially designed electronic signal.We further demonstrate applications of the interferometer in quantum technology,including bi-frequency coherent combination,frequency tuning,and optical switching.These results show the interferometer is a versatile device for multiple quantum technologies.

关 键 词：bi-frequency interferometer acousto-optic modulator quantum optics quantum manipulation 

分 类 号：TH744.3[机械工程—光学工程]