Stabilization of BEC droplet in free space by feedback control of interatomic interaction

TL;DR

This paper demonstrates that a Bose-Einstein condensate droplet in free space can be stabilized using feedback control of interatomic interactions based on nondestructive measurements, ensuring robustness against measurement imperfections.

Contribution

It introduces a feedback control method to stabilize BEC droplets in free space by adjusting interatomic interactions through nondestructive density measurements.

Findings

Stabilization of BEC droplet achieved in free space.

Robustness against measurement resolution and errors.

Effective feedback control of interatomic interactions.

Abstract

A self-trapped Bose-Einstein condensate in three-dimensional free space is shown to be stabilized by feedback control of the interatomic interaction through nondestructive measurement of the condensate's peak column density. The stability is found to be robust against poor resolution and experimental errors in the measurement.