Lower bounds for attainable fidelities in entanglement purification

被引：19

作者：

Giedke, G

Briegel, HJ

Cirac, JI

Zoller, P

机构：

[1] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria

[2] Univ Castilla La Mancha, Dept Fis Aplicada, E-13071 Ciudad Real, Spain

来源：

PHYSICAL REVIEW A | 1999年 / 59卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.59.2641

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We derive lower bounds for the attainable fidelity of standard entanglement purification protocols when local operations and measurements are subjected to errors. We introduce an error parameter which measures the distance between the ideal completely positive map describing a purification step and the one in the presence of errors. We derive nonlinear maps for a lower bound of the fidelity at each purification step in terms of this parameter. [S1050-2947(99)01104-X].

引用

收藏

页码：2641 / 2648

页数：8

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