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Positivity, discontinuity, finite resources, and nonzero error for arbitrarily varying quantum channels

Positivity, discontinuity, finite resources, and nonzero error for arbitrarily varying quantum channels

This work is motivated by a quite general question: Under which circumstances are the capacities of information transmission systems continuous? The research is explicitly carried out on arbitrarily varying quantum channels (AVQCs). We give an explicit example that answers the recent question whether the transmission of messages over AVQCs can …