Analysis of complete positivity conditions for quantum qutrit channels

Details Analysis of complete positivity conditions for quantum qutrit channels Analysis of complete positivity conditions for quantum qutrit channels

2008-09-23

arxiv.org/abs/0809.3882v3

Physics

Quantum Physics

12 pages, 8 figures (.eps), minor changes in the text and formulas

Scientific paper

We present an analysis of complete positivity (CP) constraints on qutrit
quantum channels that have a form of affine transformations of generalized
Bloch vector. For diagonal (damping) channels we derive conditions analogous to
the ones that in qubit case produce tetrahedron structure in the channel
parameter space.

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