Extremality and entanglement of states in coupled quantum systems

被引：0

作者：

Parthasarathy, K. R. ^{[1
]}

机构：

[1] Indian Stat Inst, Delhi Ctr, New Delhi 110016, India

来源：

QUANTUM COMPUTING: BACK ACTION 2006 | 2006年 / 864卷

关键词：

coupled quantum systems; extremal states; strictly nonseparable states; perfectly entangled subspaces and states; unitary error basis; stabilizer codes;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

By analysing the properties of the extreme points in the convex set of all states of a coupled bipartite quantum system with preassigned marginal states and using the unitary error basis of Weyl operators we construct examples of completely entangled subspaces and states. For multipar tite systems we introduce the notions of strictly nonseparable states and perfect entanglement and present examples exhibiting these properties. A number of unsolved problems and a conjecture are included.

引用

页码：54 / 66

页数：13

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