10-Hertz quantum light source generation on the cesium D2 line using single photon modulation

• URL: http://arxiv.org/abs/2209.07920v3
• Date: Wed, 9 Nov 2022 01:19:29 GMT
• Title: 10-Hertz quantum light source generation on the cesium D2 line using single photon modulation
• Authors: Guanhua Zuo, Yuchi Zhang, Gang Li, Pengfei Zhang, Pengfei Yang, Shiyao Zhu, Yanqiang Guo, and Tiancai Zhang
• Abstract summary: Generation of quantum light source is a promising technique to overcome the standard quantum limit in precision measurement. We demonstrate an experimental generation of quadrature squeezing resonating on the cesium D2 line down to 10 Hz for the first time. The generated low-frequency quantum light source can be applied in quantum metrology,light-matter interaction investigation and quantum memory in the audio frequency band and even below.
• Score: 8.57654150431901
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Generation of quantum light source is a promising technique to overcome the standard quantum limit in precision measurement. Here, we demonstrate an experimental generation of quadrature squeezing resonating on the cesium D2 line down to 10 Hz for the first time. The maximum squeezing in audio frequency band is 5.57 dB. Moreover, we have presented a single-photon modulation locking to control the squeezing angle, while effectively suppressing the influence of laser noise on low-frequency squeezing. The whole system operates steadily for hours. The generated low-frequency quantum light source can be applied in quantum metrology,light-matter interaction investigation and quantum memory in the audio frequency band and even below.

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