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Physics and Astronomy (1)

coherent atom-light interactions

Cambridge University Press (1)

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6 - Diffraction of Atoms Using Standing Wave Light
Tim Byrnes, Ebubechukwu O. Ilo-Okeke
Book:

Quantum Atom Optics

Published online:

23 July 2021

Print publication:

05 August 2021, pp 99-114
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Summary

This chapter discusses the basic physics of atom diffraction. Starting with a short review on the diffraction of light, we describe the absorption of photons by an atom and its subsequent emission, where the atom to changes its momentum and internal state. Assuming a two-level atom, we describe the coherent interactions of atoms with light, showing its effect on the ground state of the atoms. We further illustrate how the light impacts forces on the atom that can be used for trapping it in the light field. Next, we discuss Bragg diffraction of atoms, where the internal state of an atom is unchanged after diffraction. Here the external motional state of the atom is put in a linear superposition of its movement. Finally, we describe the diffraction of atoms by Raman pulses, where the internal state of the atom is changed after diffraction, while achieving directed motion.