Solid-state qubits with current-controlled coupling.

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

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

Afiliación

Hime T; Department of Physics, University of California, Berkeley, CA 94720-7300, USA.

Science ; 314(5804): 1427-9, 2006 Dec 01.

Article en En | MEDLINE | ID: mdl-17138895

RESUMEN

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.

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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Science Año: 2006 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

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