Photoelectron ionization spectra in a system interacting with a neighbor atom

Abstract

Photoelectron ionization spectra of a system interacting with a neighbor two-level atom are investigated using the Laplace-transform method. These spectra are typically composed of several peaks. Photoelectron ionization spectra conditioned by the measurement on the two-level atom show oscillations at the Rabi frequency. The presence of spectral zeros occurring periodically with the Rabi period is predicted. This phenomenon is analyzed in detail.

Quantum correlation and entanglement between an ionizing system and a neighboring atom interacting directly and via a quantized field

“…The dipole-dipole interaction between atoms a and b, in general, splits the peaks in the ionization spectra of isolated atom b into two parts (see Figs. 14,15,16). As a consequence, there occur two major peaks in the ionization spectra for greater pump-field intensities.…”

“…The Fano resonances in nanoscale structures can be mentioned [9]. The treatment of auto-ionization and the influence of laser may be extended to a simultaneous auto-ionization, the influence of laser, and to the interaction with a neighbor two-level atom [10][11][12][13][14]. The presence of a neighbor system may also considerably increase photo-ionization and recombination rates [15,16].…”

“…All the previous exposition beginning with (14) should be modified for n < 2. Let us note that the initial vacuum field and the ground states of the atoms a and b, n = 0, do not lead to any transitions to the continuum states.…”

Electromagnetically induced transparency for a double Fano-profile system

“…They were also a subject of variuos review articles [34,35]). AI models have also been applied in the context of electromagnetic-wave propagation in atomic media [36][37][38], for the description of interactions in a group of two [39][40][41][42][43][44] or three [45] atomic systems. Even quantum entanglement phenomena have been discussed in these systems [46].…”

Entanglement between an autoionizing system and a neighboring atom

“…There even might occur Fano zeros [6][7][8] in the spectra of isolated auto-ionization systems due to the mutual interference of different ionization paths. The interaction of an auto-ionization system with neighbor atoms leads to the presence of dynamical zeros [9][10][11][12][13] that occur periodically in time. Ionization spectra contain useful information about bound states of an atom and that is why they have widely been studied experimentally [14].…”