Nanofiber-based second-order atomic Bragg lattice for collectively enhanced coupling

TL;DR

This paper introduces two nanofiber-based schemes for trapping atoms in a second-order Bragg lattice to enhance collective atom-light interactions, minimizing heating and scattering, with potential applications in nonlinear atomic physics.

Contribution

The paper presents novel experimental schemes for nanofiber traps that optimize collective atomic coupling using second-order Bragg conditions, a new approach in atom-photon interaction studies.

Findings

Numerical simulations demonstrate effective collective coupling enhancement.

Schemes minimize light scattering and atomic heating.

Results applicable to various atomic species.

Abstract

We propose two experimental schemes for nanofiber-based compensated optical dipole traps that optimize the collective coupling of a one-dimensional array of atoms. The created array satisfies the second-order Bragg condition ($d=\lambda$), facilitating constructive interference of atomic radiation into the nanofiber and generating coherent back reflections of guided modes. Both schemes use far-off resonance light to minimize light scattering and atomic heating. Our numerical study focuses on $^{87}$Rb atoms. The results are generalizable to different atomic species and could improve the study of collective and nonlinear atomic effects.