Revisiting photon-statistics effects on multiphoton ionization. II. Connection to realistic systems

In this paper, we extend the results of an earlier paper [G. Mouloudakis and P. Lambropoulos, Phys. Rev. A 97, 053413 (2018)] in which we had demonstrated the limitations of the notion of nonresonant multiphoton ionization, in the exploration of photon statistics effects in nonlinear processes. Through the quantitative analysis of specific realistic processes, we provide the connection to conditions of intensity and pulse duration necessary in relevant experiments, including a recent seminal experiment demonstrating the effect of superbunching found in squeezed radiation. The outlook for a future era of studies on the interplay between stochasticity and nonlinearity in transitions driven by electromagnetic radiation is also discussed.

Figure 1

Ionization probability of Cs as a function of the intensity for various detunings from the intermediate resonance and $T=100\text{fs}$. The solid line shows $\mathrm{\Delta }/{\omega }_2=0.01$, the dashed line $\mathrm{\Delta }/{\omega }_2=0.05$, and the dotted line $\mathrm{\Delta }/{\omega }_2=0.1$.

Figure 2

Ionization probability of Cs as a function of the intensity for various detunings from the intermediate resonance and $T=1\text{ps}$. The solid line shows $\mathrm{\Delta }/{\omega }_2=0.01$, the dashed line $\mathrm{\Delta }/{\omega }_2=0.05$, and the dotted line $\mathrm{\Delta }/{\omega }_2=0.1$.

Figure 3

Ionization probability of Na as a function of the intensity for various detunings from the intermediate resonance and $T=100\text{fs}$. The solid line shows $\mathrm{\Delta }/{\omega }_2=0.01$, the dashed line $\mathrm{\Delta }/{\omega }_2=0.05$, and the dotted line $\mathrm{\Delta }/{\omega }_2=0.1$.

Figure 4

Ionization probability of Na as a function of the intensity for various detunings from the intermediate resonance and $T=1\text{ps}$. The solid line shows $\mathrm{\Delta }/{\omega }_2=0.01$, the dashed line $\mathrm{\Delta }/{\omega }_2=0.05$, and the dotted line $\mathrm{\Delta }/{\omega }_2=0.1$.