Automatic quantum error correction

被引：24

作者：

Barnes, JP ^{[1
]}

Warren, WS ^{[1
]}

机构：

[1] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.85.856

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Criteria are given by which dissipative evolution in the weak coupling limit can transfer populations and coherences between quantum subspaces. without a loss of coherence. The result is a form of quantum error correction implemented by the joint evolution of a system with a cold bath. It requires no external intervention and, in principle, no ancilla. An example of such a system, consisting of three dipole ordered spin 1/2 particles in a resonator, is given. The qubit, or the triple quantum coherence of the spins, is protected against all spin-flip errors.

引用

页码：856 / 859

页数：4

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