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Journal article · Preprint article

Assessing the Polarization of a Quantum Field from Stokes Fluctuations

By Klimov, A. B.1; Björk, G.2; Söderholm, J.2; Madsen, Lars Skovgaard3,4; Lassen, Mikael Østergaard3,4; Andersen, Ulrik Lund3,4; Heersink, J.5; Dong, Ruifang3,4; Marquardt, C.5; Leuchs, G.5; Sánchez-Soto, L. L.5 ...and 1 more

From

Universidad de Guadalajara1

KTH Royal Institute of Technology2

Quantum Physics and Information Technology, Department of Physics, Technical University of Denmark3

Department of Physics, Technical University of Denmark4

Max Planck Institute5

We propose an operational degree of polarization in terms of the variance of the Stokes vector minimized over all the directions of the Poincaré sphere. We examine the properties of this second-order definition and carry out its experimental determination. Quantum states with the same standard (first-order) degree of polarization are correctly discriminated by this new measure.

We argue that a comprehensive quantum characterization of polarization properties requires a whole hierarchy of higher-order degrees.

Language: English
Publisher: AMER PHYSICAL SOC
Year: 2010
Pages: 153602
ISSN: 10797114 and 00319007
Types: Journal article and Preprint article
DOI: 10.1103/PhysRevLett.105.153602
ORCIDs: Andersen, Ulrik Lund
Keywords

ENTROPY LIGHT MATRIXPhysics OPTICAL WAVES STATES UNPOLARIZED RADIATION quant-ph

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