Abstract
The entanglement-assisted capacity of a generalized amplitude dampingchannel is investigated by using the properties of partial symmetry andconcavity of mutual information. The numerical and analytical results ofthe entanglement-assisted capacity are obtained under certainconditions. It is shown that the entanglement-assisted capacity dependson the channel parameters representing the ambient temperature anddissipation, and the prior entanglement between sender and receivercan approximately double the classical capacity of the generalized amplitude damping channel.
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