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



: Marco Cianciaruso, Sabrina Maniscalco, Gerardo Adesso

Publisher: AMER PHYSICAL SOC

: 2017

: Physical Review A

: PHYSICAL REVIEW A

: PHYS REV A

: ARTN 012105

: 96

: 1

: 5

: 2469-9926

DOI: https://doi.org/10.1103/PhysRevA.96.012105


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.



Last updated on 2024-26-11 at 17:32