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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, and L. DiCarlo
Phys. Rev. Lett. 115, 127002 – Published 14 September 2015
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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.

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  • Received 30 March 2015

DOI:https://doi.org/10.1103/PhysRevLett.115.127002

© 2015 American Physical Society

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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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Authors & Affiliations

G. de Lange1, B. van Heck2, A. Bruno1, D. J. van Woerkom1, A. Geresdi1, S. R. Plissard3, E. P. A. M. Bakkers1,3, A. R. Akhmerov1, and L. DiCarlo1

  • 1QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands
  • 2Instituut-Lorentz, Leiden University, 2300 RA Leiden, The Netherlands
  • 3Department of Applied Physics, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands

See Also

Semiconductor-Nanowire-Based Superconducting Qubit

T. W. Larsen, K. D. Petersson, F. Kuemmeth, T. S. Jespersen, P. Krogstrup, J. Nygård, and C. M. Marcus
Phys. Rev. Lett. 115, 127001 (2015)

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Issue

Vol. 115, Iss. 12 — 18 September 2015

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