Efficient polarization entanglement concentration for electrons with charge detection

被引：52

作者：

Sheng, Yu-Bo ^{[2
,3
,4
,5
]}

Deng, Fu-Guo ^{[1
]}

Zhou, Hong-Yu ^{[2
,3
,4
,5
]}

机构：

[1] Beijing Normal Univ, Dept Phys, Appl Opt Beijing Area Major Lab, Beijing 100875, Peoples R China

[2] Beijing Normal Univ, Minist Educ, Key Lab Beam Technol & Mat Modificat, Beijing 100875, Peoples R China

[3] Beijing Normal Univ, Inst Low Energy Nucl Phys, Beijing 100875, Peoples R China

[4] Beijing Normal Univ, Dept Mat Sci & Engn, Beijing 100875, Peoples R China

[5] Beijing Radiat Ctr, Beijing 100875, Peoples R China

来源：

PHYSICS LETTERS A | 2009年 / 373卷 / 21期

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

Quantum physics; Entanglement concentration; Electrons; Charge detection; Quantum computation; QUANTUM; PURIFICATION;

D O I：

10.1016/j.physleta.2009.03.051

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present an entanglement concentration protocol for electrons based on their spins and their charges. The combination of an electronic polarizing beam splitter and a charge detector functions as a parity check device for two electrons, with which the parties can reconstruct maximally entangled electron pairs from those in a less-entanglement state nonlocally. This protocol has a higher efficiency than those based on linear optics and it does not require the parties to know accurately the information about the less-entanglement state, which makes it more convenient in a practical application of solid quantum computation and communication. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1823 / 1825

页数：3

共 21 条

[1] Charge detection enables free-electron quantum computation [J].