OPTICAL IMPLEMENTATION OF THE OPTIMAL UNIVERSAL AND PHASE-COVARIANT QUANTUM CLONING MACHINES

被引：3

作者：

Ye, Liu ^{[1
]}

Song, Xue-Ke ^{[1
]}

Yang, Jie ^{[1
]}

Yang, Qun ^{[1
]}

Ma, Yang-Cheng ^{[1
]}

机构：

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

来源：

MODERN PHYSICS LETTERS B | 2012年 / 26卷 / 16期

基金：

美国国家科学基金会;

关键词：

Security; universal quantum cloning; phase-covariant quantum cloning;

D O I：

10.1142/S0217984912501023

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Quantum cloning relates to the security of quantum computation and quantum communication. In this paper, firstly we propose a feasible unified scheme to implement optimal 1 -> 2 universal, 1 -> 2 asymmetric and symmetric phase-covariant cloning, and 1 -> 2 economical phase-covariant quantum cloning machines only via a beam splitter. Then 1 -> 3 economical phase-covariant quantum cloning machines also can be realized by adding another beam splitter in context of linear optics. The scheme is based on the interference of two photons on a beam splitter with different splitting ratios for vertical and horizontal polarization components. It is shown that under certain condition, the scheme is feasible by current experimental technology.

引用

页数：8

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