Population Inversion between Uncoupled Atomic States through Cavity Modes

Dynamical Casimir effect in a cavity in the presence of a three-level atom

“…We see that at most two photons can be generated with a significant probability and the third level becomes partially populated (if g 2 = 0, then the results coincide with that obtained in [18]). A similar effect of an indirect interaction between different energy levels was discovered in [28], where the coupling constants depended on the timedependent cavity length L(t) as g ∼ [L(t)] −1/2 , while the cavity frequency was supposed to be constant. One more analog is the effect of "atomic shaking" in cavities with moving boundaries, studied in [29].…”

Analytical and numerical analysis of the atom–field dynamics in non-stationary cavity QED

“…For example, the authors of [8,9] took into account only the time variations of the cavity eigenfrequency ω(t) ∼ [L(t)] −1 , assuming that g and do not depend on time. Transitions between two optically uncoupled atomic states of a three-level atom in a cavity with variable length were considered in [10]. The only time-dependent coefficient was g(t) ∼ [L(t)] −1/2 .…”

Nonstationary Casimir effect in cavities with two resonantly coupled modes

“…As far as δ2 ≪ ν, the maximal value of the increment coefficient Re(λ ± ) is practically the same as in the case of strict resonance (17). Energies of both modes have the same order of magnitude (as in the strict resonance case), therefore this regime of excitation can be named "symmetrical".…”

“…In particular, the interaction between the excited field mode and the detector, approximated either by a harmonic oscillator or by a two-level atom, was considered in [7,8,[15][16][17][18][19].…”