Direct detection of quantum entanglement

Paweł Horodecki; Artur Ekert

doi:10.1103/physrevlett.89.127902

Direct detection of quantum entanglement

Abstract

Basing on positive maps separability criterion we propose the experimentally viable, direct detection of quantum entanglement. It is efficient and does not require any a priori knowledge about the state. For two qubits it provides a sharp (i.e., “if and only if”) separability test and estimation of amount of entanglement. We view this method as a new form of quantum computation, namely, as a decision problem with quantum data structure.

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Category:: Articles
Type:: artykuł w czasopiśmie z listy filadelfijskiej
Published in:: PHYSICAL REVIEW LETTERS no. 89, edition 12, pages 1 - 4,
ISSN: 0031-9007
Language:: English
Publication year:: 2002
Bibliographic description:: Horodecki P., Ekert A.: Direct detection of quantum entanglement// PHYSICAL REVIEW LETTERS. -Vol. 89., iss. 12 (2002), s.1-4
DOI:: Digital Object Identifier (open in new tab) 10.1103/physrevlett.89.127902
Verified by:: Gdańsk University of Technology