Noise characteristics of the current biased super-semi Josephson junctions
ORAL
Abstract
Josephson junctions with a semiconductor weak link demonstrated high tunability suitable for applications in superconducting quantum devices.
At the same time, the noise and dissipation characteristics of these Junctions remain unexplored. We present a theoretical study of
the current-voltage characteristics and voltage noise of a semiconductor weak link shunted by a resistor. We calculate the effect of
the resistor's Johnson thermal noise on the low-frequency voltage noise by performing a stochastic calculus in low frequency.
We also evaluate the contribution to the noise from the fluctuations in the quasiparticle distribution on the Andreev bound states in the weak link.
At the same time, the noise and dissipation characteristics of these Junctions remain unexplored. We present a theoretical study of
the current-voltage characteristics and voltage noise of a semiconductor weak link shunted by a resistor. We calculate the effect of
the resistor's Johnson thermal noise on the low-frequency voltage noise by performing a stochastic calculus in low frequency.
We also evaluate the contribution to the noise from the fluctuations in the quasiparticle distribution on the Andreev bound states in the weak link.
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Presenters
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Longyu Ma
University of Wisconsin - Madison
Authors
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Longyu Ma
University of Wisconsin - Madison
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Maxim G Vavilov
UW-Madison