Scheme for realizing entanglement concentration via generalized measurements

被引：0
作者：
Ch. -Q. Du
M. Yang
Y. Lu
Zh. -L. Cao
机构：
[1] Anhui University,Key Laboratory of Opto
[2] Hefei Normal University,electronic Information Acquisition and Manipulation, Ministry of Education, School of Physics and Material Science
来源：
JETP Letters | 2012年 / 96卷
关键词：
Entangle State; JETP Letter; Unitary Transformation; Quantum Communication; Entanglement Concentration;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
How to concentrate non-maximally entangled states for quantum communication is a fundamental problem in quantum information. In this paper, we will apply generalized measurements to entanglement concentration of known non-maximally entangled pure states in arbitrary dimensional system. How to design the generalized measurements for the unambiguous discrimination of linearly independent non-orthogonal states is crucial for the concentration of the known non-maximally entangled states. The result shows that, any known non-maximally entangled pure state (for arbitrary dimensional system) can be transformed to the maximally entangled state only by introducing a qubit as ancilla and a joint unitary transformation operation on one of the entangled particles and the ancilla. In addition, because the less entangled state of each fail round will be re-concentrated too, the entanglement waste during the concentration process will be greatly reduced.
引用
收藏
页码：486 / 490
页数：4
相关论文
共 101 条
[1]  
Bennett C. H.(1996)undefined Phys. Rev. A 53 2046-undefined
[2]  
Bernstein H. J.(1999)undefined Phys. Rev. A 60 194-undefined
[3]  
Popescu S.(1996)undefined Phys. Rev. Lett. 76 722-undefined
[4]  
Schumacher B.(2005)undefined Phys. Rev. A 71 034312-undefined
[5]  
Bose S.(2008)undefined Opt. Commun. 282 1482-undefined
[6]  
Vedral V.(2001)undefined Phys. Rev. A 64 014301-undefined
[7]  
Knight P. L.(2001)undefined Phys. Rev. A 64 012304-undefined
[8]  
Bennett C. H.(2012)undefined J. Opt. Soc. Am. B 29 630-undefined
[9]  
Brassard G.(2012)undefined Phys. Rev. A 85 042302-undefined
[10]  
Popescu S.(2003)undefined Phys. Rev. Lett. 90 207901-undefined
12345678910