Journal Article

FZJ-2019-00974

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Non-equilibrium quasiparticles in superconducting circuits: photons vs. phonons

Catelani, G. (Corresponding author)FZJ* ; Basko, D.

2019
SciPost Foundation Amsterdam

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Please use a persistent id in citations: http://hdl.handle.net/2128/21454  doi:10.21468/SciPostPhys.6.1.013

Abstract: We study the effect of non-equilibrium quasiparticles on the operation of a superconducting device (a qubit or a resonator), including heating of the quasiparticles by the device operation. Focusing on the competition between heating via low-frequency photon absorption and cooling via photon and phonon emission, we obtain a remarkably simple non-thermal stationary solution of the kinetic equation for the quasiparticle distribution function. We estimate the influence of quasiparticles on relaxation and excitation rates for transmon qubits, and relate our findings to recent experiments.

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Contributing Institute(s):

1. JARA Institut Quanteninformation (PGI-11)

Research Program(s):

1. 144 - Controlling Collective States (POF3-144) (POF3-144)

Appears in the scientific report 2019

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; DOAJ Seal ; Emerging Sources Citation Index ; Web of Science Core Collection

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