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

Cianciaruso, Marco and Maniscalco, Sabrina and Adesso, Gerardo (2017) Role of non-Markovianity and backflow of information in the speed of quantum evolution. Physical Review A, 96 (1). 012105/1-012105/5. ISSN 1094-1622

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Abstract

We consider a two-level open quantum system undergoing 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 behavior 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.

Item Type: Article
Additional Information: ©2017 American Physical Society
Keywords: Open quantum systems, Decoherence
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Mathematical Sciences
Identification Number: 10.1103/PhysRevA.96.012105
Depositing User: Eprints, Support
Date Deposited: 14 Jul 2017 13:37
Last Modified: 12 Oct 2017 15:06
URI: http://eprints.nottingham.ac.uk/id/eprint/44202

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