SU(2)-invariant depolarization of quantum states of light



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Rivas Vargas, Ángel and Luis Aina, Alfredo (2013) SU(2)-invariant depolarization of quantum states of light. Physical review A, 88 (5). 052120/1-052120/11. ISSN 1050-2947

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We develop an SU(2)-invariant approach to the depolarization of quantum systems as the effect of random unitary SU(2) transformations. From it we derive an SU(2)-invariant Markovian master equation. This is applied to several quantum states examining whether nonclassical states are more sensible to depolarization than the classical ones. Furthermore, we show that this depolarization model provides a nontrivial generalization of depolarization channels to states of arbitrary dimension.

Item Type:Article
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©2013 American Physical Society. We acknowledge financial support from Spanish MINECO Grants No. FIS2009-10061, No. FIS2012-33152, and No. FIS2012-35583; CAM research consortium QUITEMAD S2009-ESP-1594; and UCM-BS Grant No. GICC-910758.

Uncontrolled Keywords:Dynamical semigroups; Unpolarized light; Uncertainty states; Entanglement; Model; Interferometers; Distributions; Polarization; Mechanics; Radiation
Subjects:Sciences > Physics > Optics
ID Code:30205
Deposited On:20 May 2015 14:44
Last Modified:20 May 2015 14:44

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