Quantum dynamical speedup for correlated initial states
Alireza Gholizadeh, Maryam Hadipour, Soroush Haseli, Saeed Haddadi, Hazhir Dolatkhah · Communications in Theoretical Physics · 2023
Abstract The maximal evolution speed of any quantum system can be expressed by the quantum speed limit time. In this paper, we consider a model in which the system has a correlation with the environment. The influence of the initial correlation between the system and environment on the quantum speed limit is investigated. It is shown that the appearance of non-Markovianity effects causes the speedup of quantum evolution. Moreover, we demonstrate the dependence of quantum dynamical speedup on the quantum coherence of the correlated initial state.