Gravito-magnetic trapping of 87Rb

TL;DR

This paper demonstrates the three-dimensional trapping of cold rubidium atoms using a combined gravito-magnetic potential, achieving a lifetime of 4.5 seconds through the interplay of magnetic and gravitational forces.

Contribution

It introduces a novel method of trapping neutral atoms by combining static magnetic and gravitational forces, enabling stable confinement.

Findings

Achieved 4.5 seconds atom cloud lifetime.

Successfully trapped rubidium atoms in different hyperfine states.

Demonstrated confinement solely due to magnetic and gravitational forces.

Abstract

Three-dimensional trapping of neutral atoms in a combined gravito-magnetic potential is reported. Clouds of cold rubidium atoms in different hyperfine states of the ground level were trapped with a lifetime of 4.5 s. Confinement exclusively occurred as a combination of the static magnetic force and the gravitational force.