Enhanced phase sensitive amplification towards improving noise immunity

doi:10.1088/1674-1056/acbdeb

中国物理B ›› 2023, Vol. 32 ›› Issue (5): 54204-054204.doi: 10.1088/1674-1056/acbdeb

Enhanced phase sensitive amplification towards improving noise immunity

Hui Guo(郭辉), Zhi Li(李治), Hengxin Sun(孙恒信), Kui Liu(刘奎)^†, and Jiangrui Gao(郜江瑞)

State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

收稿日期:2022-12-19 修回日期:2023-02-20 接受日期:2023-02-22 出版日期:2023-04-21 发布日期:2023-04-28
通讯作者: Kui Liu E-mail:liukui@sxu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 12074233), the National Key Research and Development Program of China (Grant No. 2021YFC2201802), and Shanxi (1331 Project).

Enhanced phase sensitive amplification towards improving noise immunity

Hui Guo(郭辉), Zhi Li(李治), Hengxin Sun(孙恒信), Kui Liu(刘奎)^†, and Jiangrui Gao(郜江瑞)

State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

Received:2022-12-19 Revised:2023-02-20 Accepted:2023-02-22 Online:2023-04-21 Published:2023-04-28
Contact: Kui Liu E-mail:liukui@sxu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 12074233), the National Key Research and Development Program of China (Grant No. 2021YFC2201802), and Shanxi (1331 Project).

摘要/Abstract

摘要： Quantum states are essential resource for quantum-enhanced applications. Loss incurred in the distribution channel, however, dissipates the high signal-to-noise ratio advantage enjoyed by the squeezed state. Here, we first demonstrate noise immunity enhancement by using phase-sensitive amplifier (PSA) with measurement-based noiseless linear amplifier (MB-NLA). We explore the signal transfer capability with the amplifier in a noisy channel. The MB-NLA enhanced PSA has obvious suppression effect on channel noises, especially it has improvement for the noise contaminated signal. Better performance can be achieved by flexibly adjusting amplifier parameters. With the amplifier, it is promising to overcome the entanglement-distribution loss and show its superiority in squeezing based quantum sensing.

关键词: phase sensitive amplification, noiseless linear amplification, quantum sensing

Abstract: Quantum states are essential resource for quantum-enhanced applications. Loss incurred in the distribution channel, however, dissipates the high signal-to-noise ratio advantage enjoyed by the squeezed state. Here, we first demonstrate noise immunity enhancement by using phase-sensitive amplifier (PSA) with measurement-based noiseless linear amplifier (MB-NLA). We explore the signal transfer capability with the amplifier in a noisy channel. The MB-NLA enhanced PSA has obvious suppression effect on channel noises, especially it has improvement for the noise contaminated signal. Better performance can be achieved by flexibly adjusting amplifier parameters. With the amplifier, it is promising to overcome the entanglement-distribution loss and show its superiority in squeezing based quantum sensing.

Key words: phase sensitive amplification, noiseless linear amplification, quantum sensing

中图分类号: (Optical implementations of quantum information processing and transfer)

42.50.Ex

84.30.Le (Amplifiers) 42.50.Dv (Quantum state engineering and measurements) 03.67.-a (Quantum information)

Hui Guo(郭辉), Zhi Li(李治), Hengxin Sun(孙恒信), Kui Liu(刘奎), and Jiangrui Gao(郜江瑞). Enhanced phase sensitive amplification towards improving noise immunity[J]. 中国物理B, 2023, 32(5): 54204-054204.

Hui Guo(郭辉), Zhi Li(李治), Hengxin Sun(孙恒信), Kui Liu(刘奎), and Jiangrui Gao(郜江瑞). Enhanced phase sensitive amplification towards improving noise immunity[J]. Chin. Phys. B, 2023, 32(5): 54204-054204.

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Enhanced phase sensitive amplification towards improving noise immunity

Enhanced phase sensitive amplification towards improving noise immunity

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