Journal Article

FZJ-2019-04580

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Photon-Assisted Charge-Parity Jumps in a Superconducting Qubit

Houzet, M. ; Serniak, K. ; Catelani, G. (Corresponding author)FZJ* ; Devoret, M. H. ; Glazman, L. I.

2019
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/22719  doi:10.1103/PhysRevLett.123.107704

Abstract: We evaluate the rates of energy and phase relaxation of a superconducting qubit caused by stray photons with energy exceeding the threshold for breaking a Cooper pair. All channels of relaxation within this mechanism are associated with the change in the charge parity of the qubit, enabling the separation of the photon-assisted processes from other contributions to the relaxation rates. Among the signatures of the new mechanism is the same order of rates of the transitions in which a qubit loses or gains energy, which is in agreement with recent experiments. Our theory offers the possibility to characterize the electromagnetic environment of superconducting devices at the single-photon level for frequencies above the superconducting gap.

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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 ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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