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.
- Received 30 March 2015
DOI:https://doi.org/10.1103/PhysRevLett.115.127002
© 2015 American Physical Society
Viewpoint
Wiring Up Superconducting Qubits
Published 14 September 2015
A qubit made of a semiconducting nanowire sandwiched between two superconductors could simplify the design of quantum information processing architectures.
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