We show how to compute or at least to estimate various capacity-related quantities for bosonic Gaussian channels. Among these are the coherent information, the entanglement-assisted classical capacity, the one-shot classical capacity, and a quantity involving the transpose operation, shown to be a general upper bound on the quantum capacity, even allowing for finite errors. All bounds are expli...

One of the most surprising recent results in quantum Shannon theory is the superactivation of the quantum capacity of a quantum channel. This phenomenon has its roots in the extreme violation of additivity of the channel capacity and enables to reliably transmit quantum information over zerocapacity quantum channels. In this work we demonstrate a similar effect for the classical capacity of a q...

UNLABELLED Parkinson's disease (PD) is characterized by motor symptoms that cause the decline of functional capacity and affect the quality of life (QoL). OBJECTIVE To evaluate the impact of changes in balance and walking capacity on the PD. METHODS The instruments used were: Unified Parkinson's Disease Rating Scale (UPDRS), modified Hoehn and Yahr Scale (HY), Schwab and England scale (SE),...