On Quantum Channel Estimation with Minimal Resources

Details On Quantum Channel Estimation with Minimal Resources On Quantum Channel Estimation with Minimal Resources

2011-06-10

arxiv.org/abs/1106.2105v1

Physics

Quantum Physics

23 pages, 3 figures

Scientific paper

We determine the minimal experimental resources that ensure a unique solution in the estimation of trace-preserving quantum channels with both direct and convex optimization methods. A convenient parametrization of the constrained set is used to develop a globally converging Newton-type algorithm that ensures a physically admissible solution to the problem. Numerical simulations are provided to support the results, and indicate that the minimal experimental setting is sufficient to guarantee good estimates.

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