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

Cianciaruso, Marco; Maniscalco, Sabrina; Adesso, Gerardo

Authors

Marco Cianciaruso

Sabrina Maniscalco

Gerardo Adesso



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.

Journal Article Type Article
Publication Date Jul 6, 2017
Journal Physical Review A
Print ISSN 2469-9926
Electronic ISSN 1094-1622
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 96
Issue 1
Article Number 012105
APA6 Citation Cianciaruso, M., Maniscalco, S., & Adesso, G. (2017). Role of non-Markovianity and backflow of information in the speed of quantum evolution. Physical Review A, 96(1), https://doi.org/10.1103/PhysRevA.96.012105
DOI https://doi.org/10.1103/PhysRevA.96.012105
Keywords Open quantum systems, Decoherence
Publisher URL https://doi.org/10.1103/PhysRevA.96.012105
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information ©2017 American Physical Society

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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