Superactivation of the Asymptotic Zero-Error Classical Capacity of a Quantum Channel
Superactivation of the Asymptotic Zero-Error Classical Capacity of a Quantum Channel
The zero-error classical capacity of a quantum channel is the asymptotic rate at which it can be used to send classical bits perfectly, so that they can be decoded with zero probability of error. We show that there exist pairs of quantum channels, neither of which individually have any zero-error …