Light shifts in atomic Bragg diffraction

Abstract

Bragg diffraction of an atomic wave packet in a retroreflective geometry with two counterpropagating optical lattices exhibits a light shift induced phase. We show that the temporal shape of the light pulse determines the behavior of this phase shift: In contrast to Raman diffraction, Bragg diffraction with Gaussian pulses leads to a significant suppression of the intrinsic phase shift due to a scaling with the third power of the inverse Doppler frequency. However, for box-shaped laser pulses, the corresponding shift is twice as large as for Raman diffraction. Our results are based on approximate, but analytical expressions as well as a numerical integration of the corresponding Schrödinger equation.

6 pages, 5 figures

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Cited by in corpus (8)

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• A high-gain Quantum free-electron laser: emergence & exponential gain
• Bragg-diffraction-induced imperfections of the signal in retroreflective atom interferometers
• Quantum field theory for multipolar composite bosons with mass defect and relativistic corrections
• Atom interferometry with quantized light pulses