Title: Classical capacity of a qubit depolarizing channel with memory
Authors: Wouters, Jeroen ×
Fannes, Mark
Akhalwaya, Ismail
Petruccione, Francesco #
Issue Date: Apr-2009
Publisher: Amer physical soc
Series Title: Physical Review A, Atomic, Molecular and Optical Physics vol:79 issue:4
Article number: 042303
Abstract: The classical product state capacity of a noisy quantum channel with memory is investigated. A forgetful noise-memory channel is constructed by Markov switching between two depolarizing channels which introduces non-Markovian noise correlations between successive channel uses. The computation of the capacity is reduced to an entropy computation for a function of a Markov process. A reformulation in terms of algebraic measures then enables its calculation. The effects of the hidden-Markovian memory on the capacity are explored. An increase in noise correlations is found to increase the capacity.
ISSN: 1050-2947
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Theoretical Physics Section
× corresponding author
# (joint) last author

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