Solid-state qubits with current-controlled coupling

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

Research output: Contribution to journalArticle

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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

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Cite this

Hime, T., Reichardt, P. A., Plourde, B., 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