Unveiling photon statistics with a 100-pixel photon-number-resolving detector

• URL: http://arxiv.org/abs/2206.13753v1
• Date: Tue, 28 Jun 2022 04:38:58 GMT
• Title: Unveiling photon statistics with a 100-pixel photon-number-resolving detector
• Authors: Risheng Cheng, Yiyu Zhou, Sihao Wang, Mohan Shen, Towsif Taher, Hong X. Tang
• Abstract summary: We demonstrate an on-chip detector that can resolve up to 100 photons by multiplexing an array of superconducting nanowires along a single waveguide. The unparalleled photon number paired with the high-speed resolution response exclusively allows us to unveil the quantum photon statistics of a true thermal light source.
• Score: 0.09786690381850356
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Single-photon detectors are ubiquitous in quantum information science and quantum sensing. They are key enabling technologies for numerous scientific discoveries and fundamental tests of quantum optics. Photon-number-revolving detectors are the ultimate measurement tool of light. However, few detectors to date can provide high-fidelity photon number resolution at few-photon levels. Here, we demonstrate an on-chip detector that can resolve up to 100 photons by spatiotemporally multiplexing an array of superconducting nanowires along a single waveguide. The unparalleled photon number resolution paired with the high-speed response exclusively allows us to unveil the quantum photon statistics of a true thermal light source for the first time, which is realized by direct measurement of high-order correlation function g^(N) with N up to 15, observation of photon-subtraction-induced photon number enhancement, and quantum-limited state discrimination against a coherent light source. Our detector provides a viable route towards various important applications, including photonic quantum computation and quantum metrology.

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