DC Field | Value | Language |
---|---|---|
dc.contributor.author | Augusiak, R. | ko |
dc.contributor.author | Bae, Joonwoo | ko |
dc.contributor.author | Tura, J. | ko |
dc.contributor.author | Lewenstein, M. | ko |
dc.date.accessioned | 2018-07-24T02:42:08Z | - |
dc.date.available | 2018-07-24T02:42:08Z | - |
dc.date.created | 2018-07-09 | - |
dc.date.created | 2018-07-09 | - |
dc.date.issued | 2014-02 | - |
dc.identifier.citation | JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, v.47, no.6 | - |
dc.identifier.issn | 1751-8113 | - |
dc.identifier.uri | http://hdl.handle.net/10203/244361 | - |
dc.description.abstract | In 2008, the conjecture that structural physical approximations (SPAs) to optimal entanglement witnesses are separable states (in general unnormalized) was posed. In an attempt to disprove it, Ha and Kye (2012 arXiv: 1210.1088v3) proposed a decomposable entanglement witness, whose SPA is entangled, and argued that it is optimal. In this paper, which is based on a comment to the latter work (Augusiak et al 2013 arXiv: 1304.2040v1), we show, both analytically and numerically, that this entanglement witness is not optimal, and as such it is not a counterexample to the conjecture. To this end, we make use of a method for checking the optimality of entanglement witnesses developed already in Lewenstein et al (2000 Phys. Rev. A 62 052310), however, hardly exploited so far in the literature. | - |
dc.language | English | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.subject | POSITIVE LINEAR-MAPS | - |
dc.subject | STATES | - |
dc.subject | SEPARABILITY | - |
dc.title | Checking the optimality of entanglement witnesses: an application to structural physical approximations | - |
dc.type | Article | - |
dc.identifier.wosid | 000331204900007 | - |
dc.identifier.scopusid | 2-s2.0-84893351802 | - |
dc.type.rims | ART | - |
dc.citation.volume | 47 | - |
dc.citation.issue | 6 | - |
dc.citation.publicationname | JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | - |
dc.identifier.doi | 10.1088/1751-8113/47/6/065301 | - |
dc.contributor.localauthor | Bae, Joonwoo | - |
dc.contributor.nonIdAuthor | Augusiak, R. | - |
dc.contributor.nonIdAuthor | Tura, J. | - |
dc.contributor.nonIdAuthor | Lewenstein, M. | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | entanglement witness | - |
dc.subject.keywordAuthor | positive map | - |
dc.subject.keywordAuthor | structural physical approximation | - |
dc.subject.keywordAuthor | entanglement | - |
dc.subject.keywordAuthor | separability | - |
dc.subject.keywordPlus | POSITIVE LINEAR-MAPS | - |
dc.subject.keywordPlus | STATES | - |
dc.subject.keywordPlus | SEPARABILITY | - |
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