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Detection of 13.8 dB squeezed vacuum states by optimizing the interference efficiency and gain of balanced homodyne detection

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Abstract

Squeezed states belong to the most prominent non-classical resources. They have compelling applications in precise measurement, quantum computation, and detection. Here, we report on the direct measurement of 13.8?dB squeezed vacuum states by improving the interference efficiency and gain of balanced homodyne detection. By employing an auxiliary laser beam, the homodyne visibility is increased to 99.8%. The equivalent loss of the electronic noise is reduced to 0.05% by integrating a junction field-effect transistor (JFET) buffering input and another JFET bootstrap structure in the balanced homodyne detector.

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DOI:10.3788/COL201917.072701

所属栏目:Quantum optics

基金项目:This work was supported by the National Natural Science Foundation of China (NSFC) (Nos.?11654002, 61575114, 11874250, and 11804207), National Key Research and Development Program of China (No.?2016YFA0301401), Program for Sanjin Scholar of Shanxi Province, Program for Outstanding Innovative Teams of Higher Learning Institutions of Shanxi, and Fund for Shanxi “1331 Project” Key Subjects Construction.

收稿日期:2019-01-08

录用日期:2019-03-28

网络出版日期:2019-07-09

作者单位    点击查看

Xiaocong Sun:State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China
Yajun Wang:State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, ChinaCollaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
Long Tian:State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, ChinaCollaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
Yaohui Zheng:State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, ChinaCollaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
Kunchi Peng:State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, ChinaCollaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

联系人作者:Yaohui Zheng(yhzheng@sxu.edu.cn)

备注:This work was supported by the National Natural Science Foundation of China (NSFC) (Nos.?11654002, 61575114, 11874250, and 11804207), National Key Research and Development Program of China (No.?2016YFA0301401), Program for Sanjin Scholar of Shanxi Province, Program for Outstanding Innovative Teams of Higher Learning Institutions of Shanxi, and Fund for Shanxi “1331 Project” Key Subjects Construction.

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引用该论文

Xiaocong Sun, Yajun Wang, Long Tian, Yaohui Zheng, Kunchi Peng, "Detection of 13.8 dB squeezed vacuum states by optimizing the interference efficiency and gain of balanced homodyne detection," Chinese Optics Letters 17(7), 072701 (2019)

CrossRef返回数据

【1】Shaoping Shi, Yajun Wang, Long Tian, Jinrong Wang, Xiaocong Sun, Yaohui Zheng. Observation of a comb of squeezed states with a strong squeezing factor by a bichromatic local oscillator. Optics Letters, 2020, 45(8): 2419 

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