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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

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