Phonon-mediated quasiparticle poisoning of superconducting microwave resonators

U. Patel, Ivan V. Pechenezhskiy, Britton Plourde, M. G. Vavilov, R. McDermott

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Nonequilibrium quasiparticles represent a significant source of decoherence in superconducting quantum circuits. Here we investigate the mechanism of quasiparticle poisoning in devices subjected to local quasiparticle injection. We find that quasiparticle poisoning is dominated by the propagation of pair-breaking phonons across the chip. We characterize the energy dependence of the time scale for quasiparticle poisoning. Finally, we observe that incorporation of extensive normal metal quasiparticle traps leads to a more than order-of-magnitude reduction in quasiparticle loss for a given injected quasiparticle power.

Original languageEnglish (US)
Article number220501
JournalPhysical Review B
Volume96
Issue number22
DOIs
StatePublished - Dec 7 2017

Fingerprint

Superconducting resonators
Microwave resonators
poisoning
Phonons
Metals
resonators
microwaves
Networks (circuits)
phonons
chips
traps
injection
propagation
metals
energy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Phonon-mediated quasiparticle poisoning of superconducting microwave resonators. / Patel, U.; Pechenezhskiy, Ivan V.; Plourde, Britton; Vavilov, M. G.; McDermott, R.

In: Physical Review B, Vol. 96, No. 22, 220501, 07.12.2017.

Research output: Contribution to journalArticle

Patel, U. ; Pechenezhskiy, Ivan V. ; Plourde, Britton ; Vavilov, M. G. ; McDermott, R. / Phonon-mediated quasiparticle poisoning of superconducting microwave resonators. In: Physical Review B. 2017 ; Vol. 96, No. 22.
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