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Measurement of geometric phase for mixed states using single photon interferometry
Dept. of Physics, Univ. of Illinois at Urbana-Champaign, USA.
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2005 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 94, no 5, 050401- p.Article in journal (Refereed) Published
Abstract [en]

Geometric phase may enable inherently fault-tolerant quantum computation. However, due to potential decoherence effects, it is important to understand how such phases arise for {\it mixed} input states. We report the first experiment to measure mixed-state geometric phases in optics, using a Mach-Zehnder interferometer, and polarization mixed states that are produced in two different ways: decohering pure states with birefringent elements; and producing a nonmaximally entangled state of two photons and tracing over one of them, a form of remote state preparation.

Place, publisher, year, edition, pages
2005. Vol. 94, no 5, 050401- p.
National Category
Physical Sciences Atom and Molecular Physics and Optics
Research subject
Physics
Identifiers
URN: urn:nbn:se:uu:diva-150355DOI: 10.1103/PhysRevLett.94.050401PubMedID: 15783614OAI: oai:DiVA.org:uu-150355DiVA: diva2:407081
Available from: 2011-03-29 Created: 2011-03-29 Last updated: 2017-12-11Bibliographically approved

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Ericsson, Marie

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