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Recent documents in Mathematics Faculty Publicationsen-usWed, 23 Apr 2014 11:11:00 PDT3600Average output entropy for quantum channels
http://iris.lib.neu.edu/math_fac_pubs/1
http://iris.lib.neu.edu/math_fac_pubs/1Mon, 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...
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Christopher King