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Relative state measures of correlations in bipartite quantum systems
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Quantum Chemistry. (Quantum information theory)
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Quantum Chemistry. (Quantum information theory)
2012 (English)In: Quantum information & computation, ISSN 1533-7146, Vol. 12, no 1-2, 119-137 p.Article in journal (Refereed) Published
Abstract [en]

Everett's concept of relative state can be viewed as a map that contains information about correlations between measurement outcomes on two quantum systems. We demonstrate how geometric properties of the relative state map can be used to develop operationally well-defined measures of the total correlation in bipartite quantum systems of arbitrary state space dimension. These measures are invariant under local unitary transformations and non-increasing under local operations. We show that some known correlation measures have a natural interpretation in terms of relative states.

Place, publisher, year, edition, pages
2012. Vol. 12, no 1-2, 119-137 p.
Keyword [en]
Quantum entanglement, correlations in quantum states, relative states
National Category
Physical Sciences
Research subject
Physics
Identifiers
URN: urn:nbn:se:uu:diva-149286ISI: 000300538000008OAI: oai:DiVA.org:uu-149286DiVA: diva2:404396
Note
Additional address (E. Sjöqvist): Centre for Quantum Technologies, NUS, SingaporeAvailable from: 2011-03-17 Created: 2011-03-17 Last updated: 2017-12-11Bibliographically approved

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Other links

arxiv/1103.3124http://www.rintonpress.com/journals/qiconline.html#v12n12

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Rudolfsson, PierreSjöqvist, Erik

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