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Entanglement–breaking indices
2015
Journal of Mathematical Physics
We study a set of new functionals (called entanglement--breaking indices) which characterize how many local iterations of a given (local) quantum channel are needed in order to completely destroy the entanglement between the system of interest over which the transformation is defined and an external ancilla. The possibility of contrasting the noisy effects introduced by the channel iterations via the action of intermediate ( filtering) transformations is analyzed. We provide some examples in
doi:10.1063/1.4931482
fatcat:ksas66i3tnfplhgqtpx5gvim3y