A1 Refereed original research article in a scientific journal
Quantum Speed Limit and Divisibility of the Dynamical Map
Authors: Teittinen Jose, Maniscalco Sabrina
Publisher: MDPI
Publication year: 2021
Journal: Entropy
Journal name in source: ENTROPY
Journal acronym: ENTROPY-SWITZ
Article number: ARTN 331
Volume: 23
Issue: 3
Number of pages: 8
eISSN: 1099-4300
DOI: https://doi.org/10.3390/e23030331
Web address : https://www.mdpi.com/1099-4300/23/3/331
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/55093571
Abstract
The quantum speed limit (QSL) is the theoretical lower limit of the time for a quantum system to evolve from a given state to another one. Interestingly, it has been shown that non-Markovianity can be used to speed-up the dynamics and to lower the QSL time, although this behaviour is not universal. In this paper, we further carry on the investigation on the connection between QSL and non-Markovianity by looking at the effects of P- and CP-divisibility of the dynamical map to the quantum speed limit. We show that the speed-up can also be observed under P- and CP-divisible dynamics, and that the speed-up is not necessarily tied to the transition from P-divisible to non-P-divisible dynamics.
The quantum speed limit (QSL) is the theoretical lower limit of the time for a quantum system to evolve from a given state to another one. Interestingly, it has been shown that non-Markovianity can be used to speed-up the dynamics and to lower the QSL time, although this behaviour is not universal. In this paper, we further carry on the investigation on the connection between QSL and non-Markovianity by looking at the effects of P- and CP-divisibility of the dynamical map to the quantum speed limit. We show that the speed-up can also be observed under P- and CP-divisible dynamics, and that the speed-up is not necessarily tied to the transition from P-divisible to non-P-divisible dynamics.
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