Microwave Photon Detection at Parametric Criticality
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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2024-04
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en
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PRX Quantum, Volume 5, issue 2
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 an efficiency of 73% and a dark-count rate of 167 kHz, corresponding to a responsivity of 1.3×1017W−1 and noise-equivalent power of 3.28 zW/√Hz. We verify the single-photon operation by extracting the Poissonian statistics of a coherent probe signal.Description
| openaire: EC/H2020/862644/EU//QUARTET
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Petrovnin, K, Wang, J, Perelshtein, M, Hakonen, P J & Paraoanu, G-S 2024, ' Microwave Photon Detection at Parametric Criticality ', PRX Quantum, vol. 5, no. 2, 020342 . https://doi.org/10.1103/PRXQuantum.5.020342