Properties on the distant distribution of entanglement for arbitrary two-qubit pure states via noisy quantum channels

被引：0

作者：

王琼 ^{[1
]}

李际新 ^{[1
]}

曾浩生 ^{[1
]}

机构：

[1] Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics, Hunan Normal University

来源：

Chinese Physics B | 2009年 / 04期

基金：

中国国家自然科学基金;

关键词：

entanglement distribution; quantum noisy channel; concurrence;

D O I：

暂无

中图分类号：

O431.2 [量子光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper investigates the change of entanglement for transmitting an arbitrarily entangled two-qubit pure state via one of three typical kinds of noisy quantum channels: amplitude damping quantum channel, phase damping quantum channel and depolarizing quantum channel. It finds, in all these three cases, that the output distant entanglement (measured by concurrence) reduces proportionately with respect to its initial amount, and the decaying ratio is determined only by the noisy characteristics of quantum channels and independent of the form of initial input state.

引用

页码：1357 / 1361

页数：5