Probing light polarization with the quantum Chernoff bound
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
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.
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-26870DOI: 10.1103/PhysRevA.82.023803ISI: 000280688300007ScopusID: 2-s2.0-77955778921OAI: oai:DiVA.org:kth-26870DiVA: diva2:373679
QC 201012012010-12-012010-11-292010-12-01Bibliographically approved