Solid-state qubits with current-controlled coupling

T. Hime, P. A. Reichardt, B. L.T. Plourde, T. L. Robertson, C. E. Wu, A. V. Ustinov, John Clarke

Research output: Contribution to journalArticle

172 Scopus citations

Abstract

The ability to switch the coupling between quantum bits (qubits) on and off is essential for implementing many quantum-computing algorithms. We demonstrated such control with two flux qubits coupled together through their mutual inductances and through the dc superconducting quantum interference device (SQUID) that reads out their magnetic flux states. A bias current applied to the SQUID in the zero-voltage state induced a change in the dynamic inductance, reducing the coupling energy controllably to zero and reversing its sign.

Original languageEnglish (US)
Pages (from-to)1427-1429
Number of pages3
JournalScience
Volume314
Issue number5804
DOIs
StatePublished - Dec 1 2006

ASJC Scopus subject areas

  • General

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    Hime, T., Reichardt, P. A., Plourde, B. L. T., Robertson, T. L., Wu, C. E., Ustinov, A. V., & Clarke, J. (2006). Solid-state qubits with current-controlled coupling. Science, 314(5804), 1427-1429. https://doi.org/10.1126/science.1134388