Characterization of qutrit channels in terms of their covariance and symmetry properties

Details Characterization of qutrit channels in terms of their covariance and symmetry properties Characterization of qutrit channels in terms of their covariance and symmetry properties

2011-04-29

arxiv.org/abs/1104.5680v2

Phys. Rev. A 84, 012321 (2011)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.84.012321

We characterize the completely positive trace-preserving maps on qutrits (qutrit channels) according to their covariance and symmetry properties. Both discrete and continuous groups are considered. It is shown how each symmetry group restricts arbitrariness in the parameters of the channel to a very small set. Although the explicit examples are related to qutrit channels, the formalism is sufficiently general to be applied to qudit channels.

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