Quantifying quantum non-Markovianity via max-relative entropy
CHINESE PHYSICS B(2019)
摘要
We investigate the non-Markovian behavior in open quantum systems from an information-theoretic perspective. Our main tool is the max-relative entropy, which quantifies the maximum probability with which a state rho can appear in a convex decomposition of a state sigma. This operational interpretation provides a new view for the non-Markovian process. We also find that max-relative entropy can be the witness and measure of non-Markovian processes. As applications, some examples are also given and compared with other measures in this paper.
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关键词
non-Markovian,max-relative entropy,open systems
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