Figure 1
From: Preservation Macroscopic Entanglement of Optomechanical Systems in non-Markovian Environment

Classical dynamics in an optomechanical system, in units of ωm.
(a) is the density plot of
, in which we show the region in the parameter space of coupling ηc and frequency cutoff ωc, where significant bound state exist with E = 10ωm and Δc = 2 ωm. Plot (b–e) show the dynamical evolution of the classical variables, where g0 = 6 × 10−4ωm, ηm = 0.03, ωm = 11ωm and E = 0. The other parameters are ηc = 0.05, sc = 3, sm = 1,
= 11ωc = 1100ωm, α(0) = 120, p(0) = 0 and we keep
.