Entanglement cost of two-qubit orthogonal measurements

被引：25

作者：

Bandyopadhyay, Somshubhro ^{[1
,2
]}

Rahaman, Ramij ^{[3
]}

Wootters, William K. ^{[4
,5
]}

机构：

[1] Bose Inst, Dept Phys, Kolkata 700091, India

[2] Bose Inst, Ctr Astroparticle Phys & Space Sci, Kolkata 700091, India

[3] Univ Bergen, Dept Informat, N-5020 Bergen, Norway

[4] Williams Coll, Dept Phys, Williamstown, MA 01267 USA

[5] Kigali Inst Sci & Technol, Dept Appl Phys, Kigali, Rwanda

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2010年 / 43卷 / 45期

关键词：

STATES;

D O I：

10.1088/1751-8113/43/45/455303

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The 'entanglement cost' of a bipartite measurement is the amount of shared entanglement two participants need to use up in order to carry out the given measurement by means of local operations and classical communication. We numerically investigate the entanglement cost of generic orthogonal measurements on two qubits. Our results strongly suggest that for almost all measurements of this kind, the entanglement cost is strictly greater than the average entanglement of the eigenstates associated with the measurements, implying that the nonseparability of a two-qubit orthogonal measurement is generically distinct from the nonseparability of its eigenstates.

引用

页数：6

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