Microwave photon detection at parametric criticality

• URL: http://arxiv.org/abs/2308.07084v3
• Date: Mon, 14 Oct 2024 12:11:52 GMT
• Title: Microwave photon detection at parametric criticality
• Authors: Kirill Petrovnin, Jiaming Wang, Michael Perelshtein, Pertti Hakonen, Gheorghe Sorin Paraoanu,
• Abstract summary: We demonstrate a simple yet powerful criticality-enhanced method of microwave photon detection. We obtain a 73% efficiency and a dark-count rate of 167 kHz, corresponding to a responsivity of $1.3 times 1017mathrmW-1$. We verify the single-photon operation by extracting the Poissonian statistics of a coherent probe signal.
• Score: 2.2077248302953336
• License:
• Abstract: The detection of microwave fields at single-photon power levels is a much sought-after technology, with practical applications in nanoelectronics and quantum information science. Here we demonstrate a simple yet powerful criticality-enhanced method of microwave photon detection by operating a magnetic-field tunable Kerr Josephson parametric amplifier near a first-order quantum phase transition. We obtain a 73% efficiency and a dark-count rate of 167 kHz, corresponding to a responsivity of $1.3 \times 10^{17}~\mathrm{W}^{-1}$ and noise-equivalent power of 3.28 zW/$\sqrt{\rm Hz}$. We verify the single-photon operation by extracting the Poissonian statistics of a coherent probe signal.

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