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arXiv:1611.02857 · Physical Review A

Witnessing quantum capacities of correlated channels

Chiara Macchiavello, Massimiliano Federico Sacchi

Published Nov 28, 2016• 18 citations
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Abstract

We test a general method to detect lower bounds of the quantum channel capacity for two-qubit correlated channels. We consider in particular correlated dephasing, depolarizing, and amplitude damping channels. We show that the method is easily implementable, it does not require a priori knowledge about the channels, and it is very efficient, since it does not rely on full quantum process tomography.

DOI
10.1103/physreva.94.052333

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