Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이진형 | - |
dc.date.accessioned | 2018-03-29T08:56:15Z | - |
dc.date.available | 2018-03-29T08:56:15Z | - |
dc.date.issued | 2013-11 | - |
dc.identifier.citation | Phys. Rev. A 88, 052123 (2013) | en_US |
dc.identifier.issn | 1050-2947 | - |
dc.identifier.uri | https://journals.aps.org/pra/abstract/10.1103/PhysRevA.88.052123 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/53926 | - |
dc.description.abstract | We propose an operational quasiprobability function for qudits, enabling a comparison between quantum and hidden-variable theories. We show that the quasiprobability function becomes positive semidefinite if consecutive measurement results are described by a hidden-variable model with locality and noninvasive measurability assumed. Otherwise, it is negative valued. The negativity depends on the observables to be measured as well as a given state, as the quasiprobability function is operationally defined. We also propose a marginal quasiprobability function and show that it plays the role of an entanglement witness for two qudits. In addition, we discuss an optical experiment of a polarization qubit to demonstrate its nonclassicality in terms of the quasiprobability function.Comment: 10 pages, 4 figures, journal version | en_US |
dc.description.sponsorship | We are grateful to M. S. Kim, M. Tame, S.-W. Ji, J. Cho, C. Lee, W. Laskowski, M. Wiesniak, M. Pawlowski, R. Rahaman, and M. Zukowski for useful comments. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (Grants No. 2010-0018295 and No. 2010-0015059). J. R. is supported by the Foundation for Polish Science TEAM project cofinanced by the EU European Regional Development Fund and a NCBiR-CHIST-ERA Project QUASAR. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMERICAN PHYSICAL SOCIETY | en_US |
dc.subject | QUANTUM-STATE TOMOGRAPHY | en_US |
dc.subject | DISCRETE WIGNER FUNCTION | en_US |
dc.subject | HIDDEN-VARIABLE THEORIES | en_US |
dc.subject | BELL INEQUALITIES | en_US |
dc.subject | MECHANICS | en_US |
dc.subject | REALISM | en_US |
dc.subject | THEOREM | en_US |
dc.subject | PHASE | en_US |
dc.title | Operational quasiprobabilities for qudits | en_US |
dc.type | Article | en_US |
dc.relation.no | 5 | - |
dc.relation.volume | 88 | - |
dc.identifier.doi | 10.1103/PhysRevA.88.052123 | - |
dc.relation.page | 1-9 | - |
dc.relation.journal | PHYSICAL REVIEW A | - |
dc.contributor.googleauthor | Ryu, Junghee | - |
dc.contributor.googleauthor | Ryu, Junghee | - |
dc.contributor.googleauthor | Hong, Sunghyuk | - |
dc.contributor.googleauthor | Lee, Jinhyoung | - |
dc.relation.code | 2013011679 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF PHYSICS | - |
dc.identifier.pid | hyoung | - |
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