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Quantal phase for nonmaximally entangled photons
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Quantum Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Quantum Chemistry.
2000 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 62, no 6, 062301- p.Article in journal (Refereed) Published
Abstract [en]

We calculate the Pancharatnam phase difference obtained when entangled two-photon states interfere. This phase depends nontrivially on the degree of entanglement between the photons forming the two-photon state. We outline an experiment where the entanglement dependence of the two-photon phase may be studied interferometrically. Also we propose how a cyclic version of this phase may be useful for implementing an efficient quantum gate.

Place, publisher, year, edition, pages
2000. Vol. 62, no 6, 062301- p.
Keyword [en]
Pancharatnam phase, polarization-entangled photons, quantum interferometry, nonlocality
National Category
Physical Sciences
Research subject
Physics
Identifiers
URN: urn:nbn:se:uu:diva-36852DOI: 10.1103/PhysRevA.62.062301ISI: 000165697200016OAI: oai:DiVA.org:uu-36852DiVA: diva2:64751
Note
Additional addresses (B. Hessmo): Innsbruck Univ., Institute for Experimental Physics, Austria; Harvard Smithsonian Center for Astrophysics, ITAMP, Cambridge, USA. Additional address (E. Sjöqvist): Atominstitut, Vienna, Austria Available from: 2006-12-21 Created: 2006-12-21 Last updated: 2017-12-06

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Sjöqvist, Erik

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