Solid-state qubits with current-controlled coupling

被引：184

作者：

Hime, T.

Reichardt, P. A.

Plourde, B. L. T.

Robertson, T. L.

Wu, C. -E.

Ustinov, A. V.

Clarke, John ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA

[3] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

[4] Univ Erlangen Nurnberg, Inst Phys 3, D-91058 Erlangen, Germany

来源：

SCIENCE | 2006年 / 314卷 / 5804期

关键词：

D O I：

10.1126/science.1134388

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：1427 / 1429

页数：3

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