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Entanglement-induced geometric phase of quantum states
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Quantum Chemistry. (Quantum Information Theory)
2010 (English)In: Physics Letters A, ISSN 0375-9601, E-ISSN 1873-2429, Vol. 374, no 13-14, 1431-1433 p.Article in journal (Refereed) Published
Abstract [en]

The concept of relative state is used to introduce geometric phases that originate from correlations in states of composite quantum systems. In particular, we identify an entanglement-induced geometric phase in terms of a weighted average of geometric phase factors associated with a decomposition that define the entanglement of formation. An explicit procedure to calculate the entanglement-induced geometric phase for qubit pairs is put forward. We illustrate it for maximally entangled mixed states (MEMS) of two qubits.

Place, publisher, year, edition, pages
2010. Vol. 374, no 13-14, 1431-1433 p.
Keyword [en]
Berry phase, mixed quantum states, quantum entanglement, quantum interferometry
National Category
Physical Sciences
Research subject
Physics; Physics and Astronomy specializing in Theoretical Physics
Identifiers
URN: urn:nbn:se:uu:diva-129490DOI: 10.1016/j.physleta.2010.01.053ISI: 000276144400006OAI: oai:DiVA.org:uu-129490DiVA: diva2:343986
Available from: 2010-08-17 Created: 2010-08-17 Last updated: 2017-12-12Bibliographically approved

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Sjöqvist, Erik

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