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An approach to constructing genuinely entangled subspaces of maximal dimension

Abstract

Genuinely entangled subspaces (GESs) are the class of completely entangled subspaces that contain only genuinely multiparty entangled states. They constitute a particularly useful notion in the theory of entanglement but also have found an application, for instance, in quantum error correction and cryptography. In a recent study (Demianowicz and Augusiak in Phys Rev A 98:012313, 2018), we have shown how GESs can be efficiently constructed in any multiparty scenario from the so-called unextendible product bases. The provided subspaces, however, are not of maximal allowable dimensions, and our aim here is to put forward an approach to building such. The method is illustrated with few examples in small systems. Connections with other mathematical problems, such as spaces of matrices of equal rank and the numerical range, are discussed.

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Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
Quantum Information Processing no. 19, pages 1 - 19,
ISSN: 1570-0755
Language:
English
Publication year:
2020
Bibliographic description:
Demianowicz M., Augusiak R.: An approach to constructing genuinely entangled subspaces of maximal dimension// Quantum Information Processing -Vol. 19,iss. 19 (2020), s.1-19
DOI:
Digital Object Identifier (open in new tab) 10.1007/s11128-020-02688-4
Verified by:
Gdańsk University of Technology

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