A Study of the Efficiency of the Class of W-States as a Quantum Channel

被引：9

作者：

Adhikari, Satyabrata ^{[1
]}

Gangopadhyay, Sunandan ^{[1
]}

机构：

[1] SN Bose Natl Ctr Basic Sci, Kolkata 700098, India

来源：

INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2009年 / 48卷 / 02期

关键词：

W-states; Entanglement swapping; Teleportation; TELEPORTATION; ENTANGLEMENT;

D O I：

10.1007/s10773-008-9813-z

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recently, a new class of W-states has been defined by Agarwal and Pati (Phys. Rev. A 74: 062320, 2006) and it has been shown that they can be used as a quantum channel for teleportation and superdense coding. In this work, we identify those three-qubit states from the set of the new class of W-states which are most efficient or suitable for quantum teleportation. We show that with some probability vertical bar W-1 > = 1/2 (vertical bar 100 > + vertical bar 010 > + v root 2 vertical bar 001 >) is best suited for teleportation channel in the sense that it does not depend on the input state.

引用

页码：403 / 408

页数：6

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