Josephson effects in an alternating current biased transition edge sensor

Gottardi, L. and Kozorezov, A. and Akamatsu, H. and van der Kuur, J. and Bruijn, M. P. and den Hartog, R. H. and Hijmering, R. and Khosropanah, P. and Lambert, Colin and van der Linden, A. J. and Ridder, M. L. and Suzuki, T. and Gao, J. R. (2014) Josephson effects in an alternating current biased transition edge sensor. Applied Physics Letters, 105 (16). ISSN 0003-6951

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We report the experimental evidence of the ac Josephson effect in a transition edge sensor (TES) operating in a frequency domain multiplexer and biased by ac voltage at MHz frequencies. The effect is observed by measuring the non-linear impedance of the sensor. The TES is treated as a weakly linked superconducting system and within the resistively shunted junction model framework. We provide a full theoretical explanation of the results by finding the analytic solution of the non-inertial Langevian equation of the system and calculating the non-linear response of the detector to a large ac bias current in the presence of noise. (C) 2014 AIP Publishing LLC.

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Journal Article
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Applied Physics Letters
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15 Dec 2014 09:46
Last Modified:
20 Sep 2023 00:40