Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optics and Spectroscopy

AC stark effect and atomic stabilization in a strong nonclassical electromagnetic field

Anna V. Bogatskaya, A. M. Popov

Published May 1, 2013• 1 citation
Publisher

Abstract

We consider the dynamics of an atom that interacts with one mode of an electromagnetic field in a microcavity. We discuss the reconstruction of the spectrum of atomic states and the occurrence of a stabilization effect for the case of a nonclassical state of the field mode, in particular, a squeezed vacuum state. We show that, for nonclassical fields, an ionization-suppression effect also arises (stabilization), which is similar to the Kramers-Henneberger stabilization in a classical electromagnetic field, and, for squeezed states of the electromagnetic field, the stabilization threshold is several times smaller than that for the classical electro-magnetic field of the same intensity.

DOI
10.1134/s0030400x13050044

Related papers

Stabilization of atoms in strong non-classical electromagnetic fields

Anna V. Bogatskaya, A. M. Popov

The dynamics of an atom in a strong single mode non-classical electromagnetic cavity field is studied. The reconstruction of the energy spectrum of atom and the effect of the ionization suppression in the presence of non-classical field are discussed. It is found that Kramers – Henneberger mechanism of the ionization suppression is realized in strong nonclassical fields also. For squeezed vacuum states the threshold of the stabilization is approximately three times lower than for classical (coherent) state of the same intensity.

Journal of Physics Conference Series•Aug 28, 2013•0 citations

Dynamics of an atomic system in a strong non-classical electromagnetic field

Anna V. Bogatskaya, A. M. Popov

The dynamics of an atom in a strong single mode non-classical electromagnetic cavity field is studied. The reconstruction of the energy spectrum of an atom and the effect of ionization suppression in the presence of a non-classical field are discussed. It is found that a mechanism of ionization suppression similar to the Kramers–Henneberger one is also realized in strong non-classical fields. For squeezed vacuum states the threshold of the stabilization is approximately three times lower than for a classical (coherent) state of the same intensity.

Laser Physics•May 31, 2013•1 citation

The ionization of atoms in an intense nonclassical electromagnetic field

A. M. Popov, Olga V. Tikhonova

The ionization of atoms in a strong nonclassical unimodal electromagnetic field was considered. It was shown that the probability of ionization could substantially change depending on the quantum state of the field even at a constant mean number of quanta in the radiation mode. The difference of ionization rates was especially large for multiphoton ionization processes. It was, in particular, shown that a nonclassical field could be much more effective from the point of view of the ionization of atoms than a classical field of the same intensity. The characteristics of the decay of a bound atomic system state in a strong nonclassical field were studied without invoking perturbation theory.

Journal of Experimental and Theoretical Physics•Nov 1, 2002•12 citations

Photoionization of Atomic Systems in Squeezed States of Light

Stepan N. Balybin, Olga V. Tikhonova

The ionization of an atom by a nonclassical electromagnetic field has been studied by a method developed to obtain results for an arbitrary initial state of the field, including squeezed vacuum with a large average number of photons. Characteristics of the ionization of atomic systems by nonclassical squeezed light have been demonstrated for the first time. In contrast to the case of a coherent field, a significantly smoother decrease in the contributions of different above-threshold channels to ionization has been found. Features of photo-electron spectra in continuum have been revealed for the first time as a significant overlapping of peaks from different ionization channels.

Journal of Experimental and Theoretical Physics Letters•Jun 1, 2019•3 citations

Effects of the Stark Interaction in the Dynamics of an Atomic System in a Broadband Squeezed Electromagnetic Field

Andrew I. Trubilko, Ashat M. Basharov

The effects of the Stark interaction in the collective radiation of an ensemble of atoms in the field of a broadband electromagnetic field in a squeezed quantum state have been considered. It has been shown that the inclusion of the conditions for the formation of the squeezed field allows one to describe the dynamics of atoms in terms of random quantum creating, annihilating, and counting processes. The latter process is the Stark interaction of atoms and the field and manifests itself in the form of a trigger superradiance pulse generated by an ensemble of identical atoms excited by a quantized resonant squeezed electromagnetic field. The description is based on the kinetic equation derived for an open localized quantum system in a broadband squeezed quantized electromagnetic field. The resulting equation differs from the known ones, but agrees with them in particular and limiting cases.

Journal of Experimental and Theoretical Physics Letters•Jul 1, 2025•5 citations

Ionization of a model quantum system by a single mode electromagnetic cavity field

Olga V. Tikhonova, A. M. Popov

The ionization of a model atom in a strong single-mode non-classical electromagnetic field is studied beyond the perturbation approach using the model of ``one discrete level + continuum'' for the atom. Explicit analytical expressions for the time-dependent probability of atomic ionization are obtained for different initial states of radiative field: Fock state, coherent wave packet, squeezed vacuum state. The results are compared to the ionization decay of discrete atomic level in a classical light field, and are analyzed for different mean number of radiative photons. The time-dependent distribution of the quantized field over photon number states is examined.

Laser Physics Letters•Dec 21, 2005•8 citations
We consider the dynamics of an atom that interacts with one mode of an electromagnetic field in a microcavity. We discuss the reconstruction of the spectrum of atomic states and the occurrence of a stabilization effect for the case of a nonclassical state of the field mode, in particular, a squeezed vacuum state. We show that, for nonclassical fields, an ionization-suppression effect also arises (stabilization), which is similar to the Kramers-Henneberger stabilization in a classical electromagnetic field, and, for squeezed states of the electromagnetic field, the stabilization threshold is several times smaller than that for the classical electro-magnetic field of the same intensity.
The dynamics of an atom in a strong single mode non-classical electromagnetic cavity field is studied. The reconstruction of the energy spectrum of atom and the effect of the ionization suppression in the presence of non-classical field are discussed. It is found that Kramers – Henneberger mechanism of the ionization suppression is realized in strong nonclassical fields also. For squeezed vacuum states the threshold of the stabilization is approximately three times lower than for classical (coherent) state of the same intensity.
The dynamics of an atom in a strong single mode non-classical electromagnetic cavity field is studied. The reconstruction of the energy spectrum of an atom and the effect of ionization suppression in the presence of a non-classical field are discussed. It is found that a mechanism of ionization suppression similar to the Kramers–Henneberger one is also realized in strong non-classical fields. For squeezed vacuum states the threshold of the stabilization is approximately three times lower than for a classical (coherent) state of the same intensity.
The ionization of atoms in a strong nonclassical unimodal electromagnetic field was considered. It was shown that the probability of ionization could substantially change depending on the quantum state of the field even at a constant mean number of quanta in the radiation mode. The difference of ionization rates was especially large for multiphoton ionization processes. It was, in particular, shown that a nonclassical field could be much more effective from the point of view of the ionization of atoms than a classical field of the same intensity. The characteristics of the decay of a bound atomic system state in a strong nonclassical field were studied without invoking perturbation theory.
The ionization of an atom by a nonclassical electromagnetic field has been studied by a method developed to obtain results for an arbitrary initial state of the field, including squeezed vacuum with a large average number of photons. Characteristics of the ionization of atomic systems by nonclassical squeezed light have been demonstrated for the first time. In contrast to the case of a coherent field, a significantly smoother decrease in the contributions of different above-threshold channels to ionization has been found. Features of photo-electron spectra in continuum have been revealed for the first time as a significant overlapping of peaks from different ionization channels.
The effects of the Stark interaction in the collective radiation of an ensemble of atoms in the field of a broadband electromagnetic field in a squeezed quantum state have been considered. It has been shown that the inclusion of the conditions for the formation of the squeezed field allows one to describe the dynamics of atoms in terms of random quantum creating, annihilating, and counting processes. The latter process is the Stark interaction of atoms and the field and manifests itself in the form of a trigger superradiance pulse generated by an ensemble of identical atoms excited by a quantized resonant squeezed electromagnetic field. The description is based on the kinetic equation derived for an open localized quantum system in a broadband squeezed quantized electromagnetic field. The resulting equation differs from the known ones, but agrees with them in particular and limiting cases.
The ionization of a model atom in a strong single-mode non-classical electromagnetic field is studied beyond the perturbation approach using the model of ``one discrete level + continuum'' for the atom. Explicit analytical expressions for the time-dependent probability of atomic ionization are obtained for different initial states of radiative field: Fock state, coherent wave packet, squeezed vacuum state. The results are compared to the ionization decay of discrete atomic level in a classical light field, and are analyzed for different mean number of radiative photons. The time-dependent distribution of the quantized field over photon number states is examined.