Solid-state circuit for spin entanglement generation and purification -: art. no. 236803

被引：53

作者：

Taylor, JM ^{[1
]}

Dür, W

Zoller, P

Yacoby, A

Marcus, CM

Lukin, MD

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria

[3] Austrian Acad Sci, Inst Quantenopt & Quanteninformat, Innsbruck, Austria

[4] Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.94.236803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show how realistic charge manipulation and measurement techniques, combined with the exchange interaction, allow for the robust generation and purification of four-particle spin entangled states in electrically controlled semiconductor quantum dots. The generated states are immunized to the dominant sources of noise via a dynamical decoherence-free subspace; all additional errors are corrected by a purification protocol. This approach may find application in quantum computation, communication, and metrology.

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