Observation of intensity squeezing in resonance fluorescence from a solid-state device

• URL: http://arxiv.org/abs/2009.06164v1
• Date: Mon, 14 Sep 2020 02:58:10 GMT
• Title: Observation of intensity squeezing in resonance fluorescence from a solid-state device
• Authors: Hui Wang, Jian Qin, Si Chen, Ming-Cheng Chen, Xiang You, Xing Ding, Y.-H. Huo, Ying Yu, C. Schneider, Sven Hoefling, Marlan Scully, Chao-Yang Lu, Jian-Wei Pan
• Abstract summary: It was predicted in 1979 that the intensity squeezing could be observed in resonance fluorescence from a two-level quantum system. Here, we report the intensity squeezing in a single-mode fibre-coupled resonance fluorescence single-photon source based on a quantum dot-micropillar system.
• Score: 9.530567322960977
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Intensity squeezing, i.e., photon number fluctuations below the shot noise limit, is a fundamental aspect of quantum optics and has wide applications in quantum metrology. It was predicted in 1979 that the intensity squeezing could be observed in resonance fluorescence from a two-level quantum system. Yet, its experimental observation in solid states was hindered by inefficiencies in generating, collecting and detecting resonance fluorescence. Here, we report the intensity squeezing in a single-mode fibre-coupled resonance fluorescence single-photon source based on a quantum dot-micropillar system. We detect pulsed single-photon streams with 22.6% system efficiency, which show subshot-noise intensity fluctuation with an intensity squeezing of 0.59 dB. We estimate a corrected squeezing of 3.29 dB at the first lens. The observed intensity squeezing provides the last piece of the fundamental picture of resonance fluorescence; which can be used as a new standard for optical radiation and in scalable quantum metrology with indistinguishable single photons.

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