Quantum entanglement via two-qubit quantum Zeno dynamics

被引：97

作者：

Wang, Xiang-Bin ^{[1
,2
,3
,4
]}

You, J. Q. ^{[1
,5
]}

Nori, Franco ^{[1
,6
]}

机构：

[1] RIKEN, Inst Adv Study, Wako, Saitama 3510198, Japan

[2] Japan Sci & Technol Agcy, ERATO SORST, Imai QCI Project, Kawaguchi, Saitama 3320012, Japan

[3] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

[4] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[5] Fudan Univ, Dept Phys & Surface Phys Lab, Natl Key Lab, Shanghai 200433, Peoples R China

[6] Univ Michigan, Ctr Study Complex Syst, Ctr Theoret Phys, Dept Phys, Ann Arbor, MI 48109 USA

来源：

PHYSICAL REVIEW A | 2008年 / 77卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevA.77.062339

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the two-particle quantum Zeno dynamics with a type of nondeterministic collective measurement whose outcome indicates whether the two-particle state has been collapsed to vertical bar 11 >. Such a threshold detection, when used continuously, can lead to nontrivial quantum dynamics. We show that such type of dynamics can be used to produce quantum entanglement almost deterministically. We then numerically show the robustness of the method and we find that the operational errors of the small-angle rotations do not accumulate. We also propose a possible implementation using superconducting flux qubits.

引用

页数：6

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