Compound Josephson-junction coupler for flux qubits with minimal crosstalk

被引：71

作者：

Harris, R. ^{[1
]}

Lanting, T. ^{[1
]}

Berkley, A. J. ^{[1
]}

Johansson, J. ^{[1
]}

Johnson, M. W. ^{[1
]}

Bunyk, P. ^{[1
]}

Ladizinsky, E. ^{[1
]}

Ladizinsky, N. ^{[1
]}

Oh, T. ^{[1
]}

Han, S. ^{[2
]}

机构：

[1] D Wave Syst Inc, Burnaby, BC V5C 6G9, Canada

[2] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 05期

关键词：

quantum computing; SQUIDs; QUANTUM; STATE;

D O I：

10.1103/PhysRevB.80.052506

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An improved tunable coupling element for building networks of coupled rf-superconducting quantum interference device (rf-SQUID) flux qubits has been experimentally demonstrated. This new form of coupler, based on the compound Josephson-junction rf-SQUID, provides a sign and magnitude tunable mutual inductance between qubits with minimal nonlinear crosstalk from the coupler tuning parameter into the qubits. Quantitative agreement is shown between an effective one-dimensional model of the coupler's potential and measurements of the coupler persistent current and susceptibility.

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页数：4

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