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Open Quantum Systems Decoherence
Classical capacity of a qubit depolarizing channel with memory
arXiv
Authors: Jeroen Wouters, Ismail Akhalwaya, Mark Fannes, Francesco Petruccione
Year
2009
Paper ID
9255
Status
Preprint
Abstract Read
~2 min
Abstract Words
86
Citations
N/A
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.
Why This Paper Matters
- This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
- It adds a 2009 reference point for readers tracking recent quantum research.
- The classical product state capacity of a noisy quantum channel with memory is investigated.
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