Physical realization of a multi-purpose quantum cloning machine with electron spins in quantum dots

被引：1

作者：

Sun, Bao-Quan ^{[1
]}

Shao, Xiao-Qiang ^{[1
,2
]}

Zhu, Ai-Dong ^{[1
]}

Yeon, Kyu-Hwang ^{[3
,4
]}

Yu, Seong-Cho ^{[3
,4
]}

机构：

[1] Yanbian Univ, Coll Sci, Dept Phys, Yanji 133002, Jilin, Peoples R China

[2] Harbin Inst Technol, Dept Phys, Ctr Condensed Matter Sci & Technol, Harbin 150001, Heilongjiang, Peoples R China

[3] Chungbuk Natl Univ, Coll Nat Sci, Phys Program BK21, Cheongju 361763, Chungbuk, South Korea

[4] Chungbuk Natl Univ, Coll Nat Sci, Dept Phys, Cheongju 361763, Chungbuk, South Korea

来源：

PHYSICA SCRIPTA | 2010年 / 82卷 / 04期

基金：

中国国家自然科学基金;

关键词：

UNIVERSAL;

D O I：

10.1088/0031-8949/82/04/045006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a scheme to realize a quantum cloning machine via coupled electron spins in quantum dots. By properly designing the position of the quantum dots and controlling the coupling between them, a multi-purpose quantum cloning machine (MPCM) including an optimal symmetric (asymmetric) 1 -> 2 universal quantum cloning machine (UQCM) and optimal symmetric (asymmetric) 1 -> 2 phase-covariant quantum cloning machine (PCCM) can be achieved.

引用

页数：6

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