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

Conference on Lasers and Electro-Optics

Coherent control of ac-Stark allowed transitions

Gennady A. Koganov, R. Shuker

Published May 1, 2008• 0 citations
Publisher

Abstract

We show that initially dipole-forbidden atomic transitions can be effectively controlled by bichromatic laser fields. Such transitions become dynamically allowed due to ac-Stark effect. Gain, dispersion and spectral properties of these transitions are discussed.
DOI
10.1109/cleo.2008.4551974

Related papers

Coherent control of AC Stark allowed transition in Λ system

Gennady A. Koganov, R. Shuker

A three level Λ system is considered and the coherence established on initially forbidden transition is calculated. It is shown that quantum-interference-related phenomena, such as electromagnetically induced transparency, gain without inversion and enhanced refractive index may occur on such transitions, which became dynamically allowed due to AC Stark effect. Gain/dispersion characteristics of such transitions strongly depend upon the relative phase between the driving and probe fields. Unlike allowed transitions, gain/absorption behavior of forbidden transitions exhibit antisymmetric feature on the Rabi sidebands. Absorption/gain spectra possess extremely narrow sub-natural resonances.

arXiv:0807.5019•Laser Physics•Apr 1, 2009•3 citations

Dynamic Stark effect and forbidden-transition spectral line shapes

J. E. Stalnaker, Dmitry Budker, S. J. Freedman +3 more

We report on an experimental and theoretical study of the dynamic (ac) Stark effect on a forbidden transition. A general framework for parametrizing and describing off-resonant ac-Stark shifts is presented. A model is developed to calculate spectral line shapes resulting from resonant excitation of atoms in an intense standing light wave in the presence of off-resonant ac-Stark shifts. The model is used in the analysis and interpretation of a measurement of the ac-Stark shifts of the static-electric-field-induced $6{s}^{2}\phantom{\rule{0.2em}{0ex}}^{1}S_{0}\ensuremath{\rightarrow}5d6s^{3}D_{1}$ transition at $408\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ in atomic Yb. The results are in agreement with estimates of the ac-Stark shift of the transition under the assumption that the shift is dominated by that of the $6{s}^{2}\phantom{\rule{0.2em}{0ex}}^{1}S_{0}$ ground state. A detailed description of the experiment and analysis is presented. A biproduct of this work is an independent determination (from the saturation behavior of the 408-nm transition) of the Stark transition polarizability, which is found to be in agreement with our earlier measurement. This work is part of the ongoing effort aimed at a precision measurement of atomic parity-violation effects in Yb.

arXiv:physics/0512111•Physical Review A•Apr 27, 2006•46 citations

The mixing of metastable states of barium atoms induced by the ac Stark effect

І. І. Бондар, В. В. Суран

We present the results of experimental investigations of atoms perturbed by laser radiation under conditions when the energy of a Stark-shifted level becomes close to the energy of a neighboring level.

Journal of Experimental and Theoretical Physics Letters•Jan 1, 2000•1 citation

Phase sensitive quantum interference on forbidden transition in ladder scheme

Gennady A. Koganov, R. Shuker

A three level ladder system is analyzed and the coherence of initially electric-dipole forbidden transition is calculated. Due to the presence of two laser fields the initially dipole forbidden transition becomes dynamically permitted due to ac Stark effect. It is shown that such transitions exhibit quantum-interference-related phenomena, such as electromagnetically induced transparency, gain without inversion and enhanced refractive index. Gain and dispersion characteristics of such transitions strongly depend upon the relative phase between the driving and the probe fields. Unlike allowed transitions, gain/absorption behavior of ac-Stark allowed transitions exhibit antisymmetric feature on the Rabi sidebands. It is found that absorption/gain spectra possess extremely narrow sub-natural resonances on these ac Stark allowed forbidden transitions. An interesting finding is simultaneous existence of gain and negative dispersion at Autler-Townes transition which may lead to both reduction of the group velocity and amplification of light.

arXiv:1402.2803•Feb 12, 2014•0 citations

Spatially resolved control of ac-Stark shifts in cold atomic ensemble

Mateusz Mazelanik, Adam Leszczyński, Michał Lipka +3 more

We demonstrate spatially resolved control of fictitious magnetic fields generated by an optically induced ac-Stark shift as a versatile tool to efficiently prepare complex spin patterns in cold atomic ensemble.

•Jan 1, 2018•0 citations

Ac Stark-mediated quantum control with two-color pulses in Two- and Three-Level Systems

Carles Serrat, Yurii V. Loiko

The optical Stark shift of two-color pulses propagating in two- and three-level media is critical for the phase-sensitivity of four-wave mixing. We present a coherent control scheme for potential ultrafast nonlinear optical spectroscopy techniques.

International Conference on Ultrafast Phenomena•Jan 1, 2006•0 citations
A three level Λ system is considered and the coherence established on initially forbidden transition is calculated. It is shown that quantum-interference-related phenomena, such as electromagnetically induced transparency, gain without inversion and enhanced refractive index may occur on such transitions, which became dynamically allowed due to AC Stark effect. Gain/dispersion characteristics of such transitions strongly depend upon the relative phase between the driving and probe fields. Unlike allowed transitions, gain/absorption behavior of forbidden transitions exhibit antisymmetric feature on the Rabi sidebands. Absorption/gain spectra possess extremely narrow sub-natural resonances.
We report on an experimental and theoretical study of the dynamic (ac) Stark effect on a forbidden transition. A general framework for parametrizing and describing off-resonant ac-Stark shifts is presented. A model is developed to calculate spectral line shapes resulting from resonant excitation of atoms in an intense standing light wave in the presence of off-resonant ac-Stark shifts. The model is used in the analysis and interpretation of a measurement of the ac-Stark shifts of the static-electric-field-induced $6{s}^{2}\phantom{\rule{0.2em}{0ex}}^{1}S_{0}\ensuremath{\rightarrow}5d6s^{3}D_{1}$ transition at 408nm408\phantom{\rule{0.3em}{0ex}}\mathrm{nm}408nm in atomic Yb. The results are in agreement with estimates of the ac-Stark shift of the transition under the assumption that the shift is dominated by that of the 6s21S06{s}^{2}\phantom{\rule{0.2em}{0ex}}^{1}S_{0}6s21S0​ ground state. A detailed description of the experiment and analysis is presented. A biproduct of this work is an independent determination (from the saturation behavior of the 408-nm transition) of the Stark transition polarizability, which is found to be in agreement with our earlier measurement. This work is part of the ongoing effort aimed at a precision measurement of atomic parity-violation effects in Yb.
A three level ladder system is analyzed and the coherence of initially electric-dipole forbidden transition is calculated. Due to the presence of two laser fields the initially dipole forbidden transition becomes dynamically permitted due to ac Stark effect. It is shown that such transitions exhibit quantum-interference-related phenomena, such as electromagnetically induced transparency, gain without inversion and enhanced refractive index. Gain and dispersion characteristics of such transitions strongly depend upon the relative phase between the driving and the probe fields. Unlike allowed transitions, gain/absorption behavior of ac-Stark allowed transitions exhibit antisymmetric feature on the Rabi sidebands. It is found that absorption/gain spectra possess extremely narrow sub-natural resonances on these ac Stark allowed forbidden transitions. An interesting finding is simultaneous existence of gain and negative dispersion at Autler-Townes transition which may lead to both reduction of the group velocity and amplification of light.