On Ruelle transfer operators and completely positive maps [PDF]
Carlos F. LardizabalWe consider applications of transfer operators (also known as Ruelle operators) to completely positive maps (CPT) in quantum information theory. It is described a correspondence between fixed points of CPT maps and certain Markov-invariant measures. We also obtain a definition of entropy induced by transfer operators and an exponential decay property for mixed-unitary channels.View original: http://arxiv.org/abs/1205.1538
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