- Letter
Almost complete revivals in quantum many-body systems
Phys. Rev. A 104, L050202 – Published 11 November, 2021
DOI: https://doi.org/10.1103/PhysRevA.104.L050202
Abstract
Revivals of initial nonequilibrium states is an ever-present concern for the theory of dynamic thermalization in many-body quantum systems. Here we consider a nonintegrable lattice of interacting spins 1/2 and show how to construct a quantum state such that a given spin 1/2 is maximally polarized initially and then exhibits an almost complete recovery of the initial polarization at a predetermined moment of time. An experimental observation of such revivals may be utilized to benchmark quantum simulators with a measurement of only one local observable. We further propose to utilize these revivals for a delayed disclosure of a secret.
