The paper introduces a Riemannian gradient descent method, with a derived gradient formula, to compute lower bounds on the Holevo capacity of general quantum channels, with numerical demonstrations.
The capacity of the quantum channel with general signal states,
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Riemannian Optimization for Holevo Capacity
The paper introduces a Riemannian gradient descent method, with a derived gradient formula, to compute lower bounds on the Holevo capacity of general quantum channels, with numerical demonstrations.