CONCENTRATING ARBITRARY FOUR-PHOTON LESS-ENTANGLED CLUSTER STATE BY SINGLE PHOTONS

被引：13

作者：

Xu, Ting-Ting ^{[1
]}

Xiong, Wei ^{[2
]}

Ye, Liu ^{[1
]}

机构：

[1] Anhui Univ, Sch Phys & Mat Sci, Hefei 230039, Peoples R China

[2] Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China

来源：

MODERN PHYSICS LETTERS B | 2012年 / 26卷 / 32期

基金：

美国国家科学基金会;

关键词：

Concentration; linear optics; cross-Kerr nonlinearities; single photon; cluster state; QUANTUM; TELEPORTATION; SCHEME;

D O I：

10.1142/S0217984912502144

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a protocol for concentrating an arbitrary four-photon entangled state into a maximally entangled state assisted with singled photons. The concentration protocol uses the linear optics and the cross-Kerr nonlinearity based on the post selection principle. Four parties called Alice, Bob, Charlie and Dan in different distant locations can obtain the cluster state from an arbitrary entangled four-photon state with a certain probability. Quantum non-demolition (QND) measurements are available in this protocol. Moreover, this scheme can be steady with a higher success possibility.

引用

页数：10

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