Active suppression of dephasing in Josephson-junction qubits

被引：16

作者：

Averin, DV ^{[1
]}

Fazio, R

机构：

[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[2] INFM, NEST, I-56126 Pisa, Italy

来源：

JETP LETTERS | 2003年 / 78卷 / 10期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1134/1.1644314

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Simple majority code correcting k dephasing errors by encoding a qubit of information into 2k + 1 physical qubits is studied quantitatively. We derive an equation for quasicontinuous evolution of the density matrix of encoded quantum information under the error correction procedure in the presence of correlated dephasing noise. A specific design of a Josephson-junction nanocircuit implementing this scheme is suggested. (C) 2003 MAIK "Nauka/Interperiodica".

引用

页码：664 / 668

页数：5

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