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Probing light polarization with the quantum Chernoff bound
KTH, School of Information and Communication Technology (ICT), Optics and Photonics, Quantum Electronics and Quantum Optics, QEO.ORCID iD: 0000-0002-2082-9583
2010 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 82, no 2, 023803- p.Article in journal (Refereed) Published
Abstract [en]

We recall the framework of a consistent quantum description of polarization of light. Accordingly, the degree of polarization of a two-mode state. (rho) over cap of the quantum radiation field can be defined as a distance of a related state (rho) over cap (b) to the convex set of all SU(2)-invariant two-mode states. We explore a distance-type polarization measure in terms of the quantum Chernoff bound and derive its explicit expression. A comparison between the Chernoff and Bures degrees of polarization leads to interesting conclusions for some particular states chosen as illustrative examples.

Place, publisher, year, edition, pages
2010. Vol. 82, no 2, 023803- p.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-26870DOI: 10.1103/PhysRevA.82.023803ISI: 000280688300007Scopus ID: 2-s2.0-77955778921OAI: oai:DiVA.org:kth-26870DiVA: diva2:373679
Note
QC 20101201Available from: 2010-12-01 Created: 2010-11-29 Last updated: 2017-12-12Bibliographically approved

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Bjoerk, Gunnar

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