Entanglement purification of Gaussian continuous variable quantum states

被引：184

作者：

Duan, LM ^{[1
]}

Giedke, G

Cirac, JI

Zoller, P

机构：

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

[2] Univ Sci & Technol China, Lab Quantum Commun & Quantum Computat, Hefei 230026, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.84.4002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We describe an entanglement purification protocol to generate maximally entangled states with high efficiencies from two-mode squeezed states or from mixed Gaussian continuous entangled states. The protocol relies on a local quantum nondemolition measurement of the total excitation number of several continuous variable entangled pairs. We propose an optical scheme to do this kind of measurement using cavity enhanced cross-Kerr interactions.

引用

页码：4002 / 4005

页数：4

共 24 条

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