Copyright (c) 2013 Northeastern University All rights reserved. http://iris.lib.neu.edu/math_fac_pubs Recent documents in Mathematics Faculty Publications en-us Tue, 21 May 2013 17:13:16 PDT 3600 http://iris.lib.neu.edu/math_fac_pubs/1 http://iris.lib.neu.edu/math_fac_pubs/1 Mon, 23 Apr 2012 12:17:47 PDT We study the regularized average Renyi output entropy r reg of quantum channels. This quantity gives information about the average noisiness of the channel output arising from a typical, highly entangled input state in the limit of infinite dimensions. We find a closed expression for βr reg , a quantity which we conjecture to be equal to r reg . We find an explicit form for βr reg for some entanglement-breaking channels and also for the qubit depolarizing channel Δ_λ as a function of the parameter λ. We prove equality of the two quantities in some cases, in particular, we... ]]> Christopher King