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Experimental test of a superconducting digital interface for vortex qubits

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Abstract.

We have developed and tested a classical superconducting logic interface to a qubit prototype based on two macroscopically distinct quantum states of a vortex in a long Josephson junction. The initial state preparation as well as the readout of a qubit is demonstrated by using a relatively simple Rapid Single Flux Quantum (RSFQ) circuit. RSFQ logic appears as a very feasible choice for constructing an interface between superconducting qubits and room-temperature electronics.

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Author information

Authors and Affiliations

  1. Superconductor Technologies Inc., 969 West Maude Avenue, CA 94086, Sunnyvale, USA

    V. K. Kaplunenko

  2. Physikalisches Institut III, Universität Erlangen-Nürnberg, Erwin-Rommel-Str. 1, 91058, Erlangen, Germany

    A. V. Ustinov

Authors
  1. V. K. Kaplunenko
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  2. A. V. Ustinov
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Corresponding author

Correspondence to A. V. Ustinov.

Additional information

Received: 16 January 2004, Published online: 20 April 2004

PACS:

74.40. + k Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.) - 74.50. + r Tunneling phenomena; point contacts, weak links, Josephson effects - 74.78.-w Superconducting films and low-dimensional structures

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Kaplunenko, V.K., Ustinov, A.V. Experimental test of a superconducting digital interface for vortex qubits. Eur. Phys. J. B 38, 3–8 (2004). https://doi.org/10.1140/epjb/e2004-00091-3

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  • DOI: https://doi.org/10.1140/epjb/e2004-00091-3

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