Absorption of hybrid fibre modes by Cs atoms in quadrupole transitions
- URL: http://arxiv.org/abs/2110.09963v4
- Date: Wed, 18 Oct 2023 20:22:57 GMT
- Title: Absorption of hybrid fibre modes by Cs atoms in quadrupole transitions
- Authors: Smail Bougouffa and Mohamed Babiker
- Abstract summary: We evaluate the rate of the absorption of an optical nanofiber mode by a Cs atom in an electric quadrupole transition.
Close to the fiber, however, the absorption rate for the input power chosen can be two orders of magnitude larger than the quadrupole de-excitation rate.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We evaluate the rate of the absorption of an optical nanofiber mode by a Cs
atom in an electric quadrupole transition. With the Cs atom localized near the
outer surface of the optical nano-fiber, an interaction occurs between the
atomic quadrupole tensor components and the gradients of the vector components
of the electric field of a hybrid fiber mode. The absorption rate is evaluated
as a function of the radial position of the atom from the fiber axis, assuming
a specific value of the laser power and we use experimentally accessible
parameters. We find that the absorption of the hybrid modes by the Cs atom
decreases as the atom recedes away from the fiber axis and formally vanishes at
sufficiently large radial distances. Close to the fiber, however, the
absorption rate for the input power chosen can be two orders of magnitude
larger than the quadrupole de-excitation rate despite the moderate power used.
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