SU(2)-invariant depolarization of quantum states of light
arXiv:1310.8485 · doi:10.1103/PhysRevA.88.052120
Abstract
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.
RevTex4 file, color figures, published version
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- Quantum theory of polarimetry: From quantum operations to Mueller matrices
- On the Optimal Choice of Spin-Squeezed States for Detecting and Characterizing a Quantum Process
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- Quantum Estimation of the Stokes Vector Rotation for a General Polarimetric Transformation
- Robust quantum metrology with random Majorana constellations
- Spin coherence scale: operator-ordering sensitivity beyond the Heisenberg-Weyl group