Efficient Approximation of Quantum Channel Capacities

Abstract

We propose an iterative method for approximating the capacity of classical-quantum channels with a discrete input alphabet and a finite-dimensional output under additional constraints on the input distribution. Based on duality of convex programming, we derive explicit upper and lower bounds for the capacity. To provide an additive ε-close estimate… (More)
DOI: 10.1109/TIT.2015.2503755

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