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arXiv · 1704.08061

Role of non-Markovianity and backflow of information in the speed of quantum evolution

Marco Cianciaruso·Sabrina Maniscalco·Gerardo Adesso
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Abstract

We consider a two-level open quantum system undergoing either pure dephasing, dissipative, or multiply decohering dynamics and show that, whenever the dynamics is non-Markovian, the initial speed of evolution is a monotonic function of the relevant physical parameter driving the transition between the Markovian and non-Markovian behaviour of the dynamics. In particular, within the considered models, a speed increase can only be observed in the presence of backflow of information from the environment to the system.

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Marco Cianciaruso, Sabrina Maniscalco, Gerardo Adesso. 2017-04-26. Role of non-Markovianity and backflow of information in the speed of quantum evolution. https://doi.org/10.1103/physreva.96.012105

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