Local cloning of genuinely entangled states of three qubits

被引：4

作者：

Choudhary, Sujit K. ^{[1
]}

Kar, Guruprasad ^{[1
]}

Kunkri, Samir

Rahaman, Ramij ^{[1
]}

Roy, Anirban ^{[1
]}

机构：

[1] Indian Stat Inst, Phys & Appl Math Unit, Kolkata 700108, India

来源：

PHYSICAL REVIEW A | 2007年 / 76卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.76.062312

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss the (im)possibility of the exact cloning of orthogonal but genuinely entangled three qubit states aided with entangled ancilla under local operation and classical communication. Whereas any two orthogonal Greenberger-Horne-Zeilinger (GHZ) states taken from the canonical GHZ basis can be cloned with the help of a known GHZ state, surprisingly we find that no two W states can be cloned by using any known three qubit (possibly entangled) state as a blank copy.

引用

页数：5

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