title: Realization of Microwave Quantum Circuits Using Hybrid Superconducting-Semiconducting Nanowire Josephson Elements.
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.
authors.affiliation: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
authors.forename: G
authors.initials: G
authors.lastname: de Lange
authors.affiliation: Instituut-Lorentz, Leiden University, 2300 RA Leiden, The Netherlands.
authors.forename: B
authors.initials: B
authors.lastname: van Heck
authors.affiliation: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
authors.forename: A
authors.initials: A
authors.lastname: Bruno
authors.affiliation: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
authors.forename: D J
authors.initials: DJ
authors.lastname: van Woerkom
authors.affiliation: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
authors.forename: A
authors.initials: A
authors.lastname: Geresdi
authors.affiliation: Department of Applied Physics, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands.
authors.forename: S R
authors.initials: SR
authors.lastname: Plissard
authors.affiliation: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.|Department of Applied Physics, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands.
authors.forename: E P A M
authors.initials: EP
authors.lastname: Bakkers
authors.affiliation: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
authors.forename: A R
authors.initials: AR
authors.lastname: Akhmerov
authors.affiliation: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
authors.forename: L
authors.initials: L
authors.lastname: DiCarlo