On the Existence and Robustness of Steady Position-Momentum Correlations for Time-Dependent Quadratic Systems

Figure 4

Second-order correlation functions evaluated over (a) the 𝑛=1, (b) the 𝑛=2, and (c) the 𝑛=50 harmonic oscillator eigenstate that results from the instantaneous Hamiltonian spectral problem at 𝑡₀. In all figures: 𝛿₀=0.2,0.4,0.8,1.6 (solid, dashed, dot-dashed, dotted).

(a)

(b)

(c)