Quantum coherent tunable coupling of superconducting qubits

被引：341

作者：

Niskanen, A. O.

Harrabi, K.

Yoshihara, F.

Nakamura, Y. ^{[1
]}

Lloyd, S.

Tsai, J. S.

机构：

[1] Japan Sci & Technol Inst, CREST, Kawaguchi, Saitama 3320012, Japan

[2] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[3] NEC Fundamental & Environm Res Labs, Tsukuba, Ibaraki 3058501, Japan

[4] VTT Tech Res Ctr Finland, Sensors, Espoo 02044, Finland

[5] MIT, Cambridge, MA 02139 USA

来源：

SCIENCE | 2007年 / 316卷 / 5825期

关键词：

D O I：

10.1126/science.1141324

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：

To do large-scale quantum information processing, it is necessary to control the interactions between individual qubits while retaining quantum coherence. To this end, superconducting circuits allow for a high degree of flexibility. We report on the time-domain tunable coupling of optimally biased superconducting flux qubits. By modulating the nonlinear inductance of an additional coupling element, we parametrically induced a two-qubit transition that was otherwise forbidden. We observed an on/off coupling ratio of 19 and were able to demonstrate a simple quantum protocol.

引用

页码：723 / 726

页数：4

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