Figure 2. Fidelity plots.

(a) Storage and (b) retrieval processes for a quantum state |ψ_s〉 = α_F|ψ₀〉 + β_F|ψ₁〉. In both cases, we plot the fidelity between the initial |ψ〉_s and the instantaneous state |ψ(t)〉, i.e., . Any arbitrary state |ψ〉 = u|ψ₀〉 + v|ψ₁〉 can be stored and retrieved with unit fidelity. (c) Fidelity between the approximated ground state in Eq. (2) and the instantaneous ground state . (d) Fidelity between the approximated first excited state in Eq. (2) and the instantaneous first excited state . For all the simulations, we choose the system parameters as ω_cav = 1, ω_eg = 0.1 ω_cav, Ω₀ = ω_cav, and the total evolution T = 105/ω_cav.