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arXiv:1102.4659 · Physical Review A

Alternative non-Markovianity measure by divisibility of dynamical maps

S. C. Hou, X. X. Yi, Sixia Yu, C. H. Oh

Published Jun 22, 2011• 115 citations
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Abstract

By identifying non-Markovianity with nondivisibility, we propose a measure of non-Markovianity for quantum processes. Three examples are presented, and the measure of non-Markovianity is calculated and discussed for these examples. Comparisons with other measures of non-Markovianity are made. The present non-Markovianity measure has the merit that no optimization procedure is required and it is finite for any quantum process, which greatly enhances the practical relevance of the proposed measure.

DOI
10.1103/physreva.83.062115

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