Detecting Lower Bounds to Quantum Channel Capacities

Chiara Macchiavello, Massimiliano F. Sacchi
2016 Physical Review Letters  
We propose a method to detect lower bounds to quantum capacities of a noisy quantum communication channel by means of few measurements. The method is easily implementable and does not require any knowledge about the channel. We test its efficiency by studying its performance for most well known single qubit noisy channels and for the generalised Pauli channel in arbitrary finite dimension.
doi:10.1103/physrevlett.116.140501 pmid:27104688 fatcat:injyhc2l7bajhhd2j5jnhi6oxa