Realization of microwave quantum circuits using hybrid superconducting-semiconducting nanowire Josephson elements

G. de Lange, B. van Heck, A. Bruno, D.J. van Woerkom, A. Geresdi, S.R. Plissard, E.P.A.M. Bakkers, A.R. Akhmerov, L. DiCarlo

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

We report the realization of quantum microwave circuits using hybrid superconductor-semiconductor Josephson elements comprised of InAs nanowires contacted by NbTiN. Capacitively shunted single elements behave as transmon circuits with electrically tunable transition frequencies. Two-element circuits also exhibit transmonlike behavior near zero applied flux but behave as flux qubits at half the flux quantum, where nonsinusoidal current-phase relations in the elements produce a double-well Josephson potential. These hybrid Josephson elements are promising for applications requiring microwave superconducting circuits operating in a magnetic field.

Original languageEnglish
Article number127002
Pages (from-to)1-5
JournalPhysical Review Letters
Volume115
Issue number12
DOIs
Publication statusPublished - 14 Sep 2015

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