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

Calculation of the fluorescence spectrum of two interacting atoms in external field

Alexander V. Gorokhov, Vitalii Semin

Published Oct 1, 2009• 4 citations
Publisher

Abstract

The radiation line profile for two identical dipole-dipole interacting two-level atoms in an external laser field is calculated. The stochastic component of the laser radiation is explicitly taken into account simulating it by the optical white noise. An explicit analytical expression for the radiation line profile is found for the case where the regular field component can be neglected.

DOI
10.1134/s0030400x09100130

Related papers

Resonance fluorescence spectra of two driven two-level atoms

Y. Ben-Aryeh, C. M. Bowden

A theoretical analysis is developed for the spectrum of the light scattered by two two-level atoms driven near resonance by an external coherent electromagnetic field. The atoms are assumed to relax to equilibrium with the driving field as a result of radiation damping. The explicit dependence of the coherent dipole-dipole interactions on the distance between the two atoms is taken into account. For the case of two two-level atoms with a fixed distance smaller than a wavelength, an analytical result for the resonance fluorescence line shape is obtained, and the result is compared to previous work.>

IEEE Journal of Quantum Electronics•Jul 1, 1988•11 citations

Radiation of a system of two identical interacting two-level atoms

Alexander V. Gorokhov, Vitalii Semin

Two identical dipole-dipole interacting two-level atoms in a nonideal cavity are considered at a nonzero temperature. The radiation line profile is calculated within the quantum relaxation theory as a function of the interatomic distance and an exact analytical expression for this profile is obtained.

Bulletin of the Russian Academy of Sciences Physics•Apr 1, 2009•4 citations

Steady-state fluorescence intensity of two identical atoms with dipole-dipole interaction

Денис Кузнецов, M. G. Gladush, Vl. K. Rerikh

The dependence of steady-state fluorescence of a diatomic system on the frequency of a laser field is investigated. The steady-state fluorescence intensity can be presented in special geometry as the sum of two parts. The first part is described using an independent two-level system. The second is related to the two-photon excitation process and is described using a three-level system. The respective analytical expressions are obtained for the line profiles, their width, and intensity at the maxima.

Bulletin of the Russian Academy of Sciences Physics•Jun 1, 2012•1 citation

Atomic fluorescence in a mode-hopping laser field

Henk F. Arnoldus, Gerard Nienhuis

The authors apply the recently developed theory of multiplicative stochastic correlation functions with Markovian random jumps to the problem of resonance fluorescence from a two-level atom in a strong laser field. The finite bandwidth of a single-mode laser or the appearance of distinct lines in a multimode laser is considered to be brought about by a random mode-switching process. The two-time dipole correlation functions, which determine the spectral distribution of the fluorescence and the temporal correlations between the emitted photons are averaged exactly over the stochastics of the driving field. The authors' explicit expressions only involve single-time averages, which can be easily evaluated for a given probability distribution. These results generalise and modify earlier results. The authors obtain closed expressions, rather than implicit differential equations, which can handle the continuous case as well, and take into account the initial correlations, which always arise when the laser coherence time is finite. They illustrate the dependence on the stochastics of the laser model by comparing the multimode description with the phase-diffusion process and the Lorentz wave, which all give rise to the same laser profile, but to a different fluorescence spectrum.

Journal of Physics B Atomic and Molecular Physics•Aug 28, 1986•8 citations

Fluctuations in atomic fluorescence induced by laser noise

Gautam Vemuri

The dynamical behavior of an atom interacting with a coherent and a chaotic field is investigated. Langevin equations describing the time dependent behavior of the dipole moment and population inversion are numerically integrated using Monte-Carlo techniques. The model can account for a finite correlation time for the chaotic component. Results on fluctuations in the fluorescence intensity from an ensemble of two-level atoms and the power spectra of these intensity fluctuations are presented. The effect of detuning the pump field from the resonant frequency of the two-level atoms on the fluctuations in fluorescence is studied. The effect of field fluctuations on the macroscopic polarization produced by the atoms is also reported. The fluctuation behavior of the atomic fluorescence is found to be very sensitive to the correlation time of the stochastic component.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Mar 1, 1991•0 citations

Atomic response to the Lorentz wave

Henk F. Arnoldus, Gerard Nienhuis

The fluorescence radiation, emitted by a two-level atom in a perturber bath, is considered. The atom is driven by a single-mode laser with a Lorentzian profile, which is brought about by a fluctuating phase. The stochastics of this phase is taken to be the Markovian random-jump process. The authors derive explicit expressions for the atomic density matrix, the temporal photon correlations and the fluorescence spectrum. The results greatly resemble the results for a non-Gaussian diffusive phase, but deviate slightly from the corresponding expressions in the Wiener-Levy limit of the diffusion process.

Journal of Physics B Atomic and Molecular Physics•Mar 28, 1986•10 citations
The radiation line profile for two identical dipole-dipole interacting two-level atoms in an external laser field is calculated. The stochastic component of the laser radiation is explicitly taken into account simulating it by the optical white noise. An explicit analytical expression for the radiation line profile is found for the case where the regular field component can be neglected.
A theoretical analysis is developed for the spectrum of the light scattered by two two-level atoms driven near resonance by an external coherent electromagnetic field. The atoms are assumed to relax to equilibrium with the driving field as a result of radiation damping. The explicit dependence of the coherent dipole-dipole interactions on the distance between the two atoms is taken into account. For the case of two two-level atoms with a fixed distance smaller than a wavelength, an analytical result for the resonance fluorescence line shape is obtained, and the result is compared to previous work.>
The dependence of steady-state fluorescence of a diatomic system on the frequency of a laser field is investigated. The steady-state fluorescence intensity can be presented in special geometry as the sum of two parts. The first part is described using an independent two-level system. The second is related to the two-photon excitation process and is described using a three-level system. The respective analytical expressions are obtained for the line profiles, their width, and intensity at the maxima.
The authors apply the recently developed theory of multiplicative stochastic correlation functions with Markovian random jumps to the problem of resonance fluorescence from a two-level atom in a strong laser field. The finite bandwidth of a single-mode laser or the appearance of distinct lines in a multimode laser is considered to be brought about by a random mode-switching process. The two-time dipole correlation functions, which determine the spectral distribution of the fluorescence and the temporal correlations between the emitted photons are averaged exactly over the stochastics of the driving field. The authors' explicit expressions only involve single-time averages, which can be easily evaluated for a given probability distribution. These results generalise and modify earlier results. The authors obtain closed expressions, rather than implicit differential equations, which can handle the continuous case as well, and take into account the initial correlations, which always arise when the laser coherence time is finite. They illustrate the dependence on the stochastics of the laser model by comparing the multimode description with the phase-diffusion process and the Lorentz wave, which all give rise to the same laser profile, but to a different fluorescence spectrum.
The dynamical behavior of an atom interacting with a coherent and a chaotic field is investigated. Langevin equations describing the time dependent behavior of the dipole moment and population inversion are numerically integrated using Monte-Carlo techniques. The model can account for a finite correlation time for the chaotic component. Results on fluctuations in the fluorescence intensity from an ensemble of two-level atoms and the power spectra of these intensity fluctuations are presented. The effect of detuning the pump field from the resonant frequency of the two-level atoms on the fluctuations in fluorescence is studied. The effect of field fluctuations on the macroscopic polarization produced by the atoms is also reported. The fluctuation behavior of the atomic fluorescence is found to be very sensitive to the correlation time of the stochastic component.
The fluorescence radiation, emitted by a two-level atom in a perturber bath, is considered. The atom is driven by a single-mode laser with a Lorentzian profile, which is brought about by a fluctuating phase. The stochastics of this phase is taken to be the Markovian random-jump process. The authors derive explicit expressions for the atomic density matrix, the temporal photon correlations and the fluorescence spectrum. The results greatly resemble the results for a non-Gaussian diffusive phase, but deviate slightly from the corresponding expressions in the Wiener-Levy limit of the diffusion process.