%0 Journal Article %T Evaluating capacities of Bosonic Gaussian channels %A A. S. Holevo %A R. F. Werner %J Physics %D 1999 %I arXiv %X 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 new quantity involving the transpose operation, shown to be a general upper bound on the quantum capacity, even allowing for finite errors. All bounds are explicitly evaluated for the case of a one-mode channel with attenuation/amplification and classical noise. %U http://arxiv.org/abs/quant-ph/9912067v1