Depolarization for quantum channels with higher symmetries

Details Depolarization for quantum channels with higher symmetries Depolarization for quantum channels with higher symmetries

2009-08-04

arxiv.org/abs/0908.0421v1

Physics

Quantum Physics

6 pages. Comments welcome

Scientific paper

The depolarization channel is usually modelled as a quantum operation that
destroys all input information, replacing it by a completely chaotic state. For
qubits this has a quite intuitive interpretation as a shrinking of the Bloch
sphere. We propose a way to deal with depolarizing dynamics (in the Markov
approximation) for systems with arbitrary symmetries.

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