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Quantum degrees of polarization

✍ Scribed by Gunnar Björk; Jonas Söderholm; Luis L. Sánchez-Soto; Andrei B. Klimov; Iulia Ghiu; Paulina Marian; Tudor A. Marian

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
359 KB
Volume
283
Category
Article
ISSN
0030-4018

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✦ Synopsis

We discuss different proposals for the degree of polarization of quantum fields. The simplest approach, namely making a direct analogy with the classical description via the Stokes operators, is known to produce unsatisfactory results. Still, we argue that these operators and their properties should be basic for any measure of polarization. We compare alternative quantum degrees and put forth that they order various states differently. This is to be expected, since, despite being rooted in the Stokes operators, each of these measures only captures certain characteristics. Therefore, it is likely that several quantum degrees of polarization will coexist, each one having its specific domain of usefulness.

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