Optical excitation spectrum of an atom in a surface-induced potential

Details Optical excitation spectrum of an atom in a surface-induced potential Optical excitation spectrum of an atom in a surface-induced potential

2006-10-10

arxiv.org/abs/quant-ph/0610067v1

Physics

Quantum Physics

Scientific paper

We study the optical excitation spectrum of an atom in the vicinity of a dielectric surface. We calculate the rates of the total scattering and the scattering into the evanescent modes. With a proper assessment of the limitations, we demonstrate the portability of the flat-surface results to an experimental situation with a nanofiber. The effect of the surface-induced potential on the excitation spectrum for free-to-bound transitions is shown to be weak. On the contrary, the effect for bound-to-bound transitions is significant leading to a large excitation linewidth, a substantial negative shift of the peak position, and a strong long tail on the negative side and a small short tail on the positive side of the field--atom frequency detuning.

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