Fully permanent magnet atom chip for Bose-Einstein condensation

TL;DR

This paper presents a fully permanent magnet atom chip that enables efficient trapping and Bose-Einstein condensation of ultracold atoms, utilizing self-biased magnetic fields and RF spectroscopy for analysis.

Contribution

Introduction of a self-biased, fully permanent magnet atom chip for ultracold atom trapping and BEC production, with efficient loading and in-trap analysis capabilities.

Findings

Successful formation of BEC observed in time of flight images.

Efficient adiabatic transport of magnetic trap demonstrated.

RF spectroscopy used for in-trap temperature measurement.

Abstract

We describe a self-biased, fully permanent magnet atom chip used to study ultracold atoms and to produce a Bose-Einstein condensate (BEC). The magnetic trap is loaded efficiently by adiabatic transport of a magnetic trap via the application of uniform external fields. Radio frequency spectroscopy is used for in-trap analysis and to determine the temperature of the atomic cloud. The formation of a Bose-Einstein condensate is observed in time of flight images and as a narrow peak appearing in the radio frequency spectrum.