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Springer eBooks

Two-Level Atoms in an Intense Monochromatic Field: A Review of Recent Experimental Investigations

Shaoul Ezekiel

Published Jan 1, 1978• 5 citations
Publisher
DOI
10.1007/978-1-4757-0665-9_13

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Channeling of Atoms in a Standing Wave

V. I. Balykin, Vladilen S Letokhov

This chapter provides a brief review of the recent theoretical and experimental results of channeling of atoms in the standing wave. It considers the channeling (one dimensional localization) of atoms in two configurations of the laser fields: a monochromatic and a bichromatic one dimensional laser fields. A quasi resonant monochromatic laser field creates a spatially periodic potential field with a period equal to a half of the wavelength. When atomic beam crosses standing wave and atoms have a low enough kinetic energy, they are guided into the channels where they move along the channel and oscillate in the transverse direction. To detect this channeling the atoms have been chosen themselves as probes of their position. A scheme of a cooling of atoms through their channeling is based on the adiabatic lowering the standing wave intensity.

CRC Press eBooks•Apr 23, 2020•0 citations

Interaction of two-level atoms and light

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High-precision quasienergies for a driven two-level atom at the two-photon preresonance

Dong‐Sheng Guo, J. T. Wang, Yong-Shi Wu

A computation with unprecedented precision is presented for quasienergies of a two-level atom in a monochromatic radiation on the basis of a recently obtained exact expression [D.-S. Guo et al., Phys. Rev. A 73, 023419 (2006)]. We start with the proof of an expression theorem. With this theorem the quasienergies for any two-level atom can be expressed in terms of the quasienergies for only those with the original energy spacing (per field photon energy) being an integer (preresonances). Then we carry out a numerical evaluation of the quasienergies at the two-photon preresonance, which involves computing an infinite determinant, up to the 18th power of the coupling strength. The theoretical prediction presents an experimental challenge for high-precision tests of quantum mechanics and could be exploited for precise calibration of high laser intensities.

Physical Review A•Feb 4, 2008•3 citations
This chapter provides a brief review of the recent theoretical and experimental results of channeling of atoms in the standing wave. It considers the channeling (one dimensional localization) of atoms in two configurations of the laser fields: a monochromatic and a bichromatic one dimensional laser fields. A quasi resonant monochromatic laser field creates a spatially periodic potential field with a period equal to a half of the wavelength. When atomic beam crosses standing wave and atoms have a low enough kinetic energy, they are guided into the channels where they move along the channel and oscillate in the transverse direction. To detect this channeling the atoms have been chosen themselves as probes of their position. A scheme of a cooling of atoms through their channeling is based on the adiabatic lowering the standing wave intensity.
A computation with unprecedented precision is presented for quasienergies of a two-level atom in a monochromatic radiation on the basis of a recently obtained exact expression [D.-S. Guo et al., Phys. Rev. A 73, 023419 (2006)]. We start with the proof of an expression theorem. With this theorem the quasienergies for any two-level atom can be expressed in terms of the quasienergies for only those with the original energy spacing (per field photon energy) being an integer (preresonances). Then we carry out a numerical evaluation of the quasienergies at the two-photon preresonance, which involves computing an infinite determinant, up to the 18th power of the coupling strength. The theoretical prediction presents an experimental challenge for high-precision tests of quantum mechanics and could be exploited for precise calibration of high laser intensities.