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arXiv · 2308.07084

Microwave photon detection at parametric criticality

Kirill Petrovnin·Jiaming Wang·Michael Perelshtein·Pertti Hakonen·Gheorghe Sorin Paraoanu
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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 at the border of a first-order phase transition and close to the critical point. 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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Kirill Petrovnin, Jiaming Wang, Michael Perelshtein, Pertti Hakonen, Gheorghe Sorin Paraoanu. 2023-08-14. Microwave photon detection at parametric criticality. https://doi.org/10.1103/prxquantum.5.020342

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