Geometric resonance cooling of polarizable particles in an optical waveguide

TL;DR

This paper demonstrates a novel optical waveguide cooling method where Rayleigh scattering induces a velocity-dependent force on atoms, enabling efficient cooling of polarizable particles without atomic resonance.

Contribution

It introduces a new geometric resonance cooling mechanism in optical waveguides based on Rayleigh scattering, distinct from traditional cavity cooling.

Findings

Achieves linear friction force comparable to cavity cooling

Demonstrates velocity-dependent scattering force in waveguide setup

Applicable to far-detuned, polarizable particles

Abstract

In the radiation field of an optical waveguide, the Rayleigh scattering of photons is shown to result in a strongly velocity-dependent force on atoms. The pump field, which is injected in the fundamental branch of the waveguide, is favorably scattered by a moving atom into one of the transversely excited branches of propagating modes. All fields involved are far detuned from any resonances of the atom. For a simple polarizable particle, a linear friction force coefficient comparable to that of cavity cooling can be achieved.