RF spectroscopy in a resonant RF-dressed trap

TL;DR

This paper investigates RF spectroscopy of atoms in a resonant RF-dressed trap, revealing how line shapes relate to temperature and demonstrating evaporative cooling via RF frequency sweeps.

Contribution

It introduces a method to perform RF spectroscopy in RF-dressed traps and demonstrates evaporative cooling by sweeping the RF frequency.

Findings

Line shape correlates with atomic cloud temperature.

Evaporative cooling achieved through RF frequency sweeps.

Spectroscopy provides insights into dressed atom states.

Abstract

We study the spectroscopy of atoms dressed by a resonant radiofrequency (RF) field inside an inhomogeneous magnetic field and confined in the resulting adiabatic potential. The spectroscopic probe is a second, weak, RF field. The observed line shape is related to the temperature of the trapped cloud. We demonstrate evaporative cooling of the RF-dressed atoms by sweeping the frequency of the second RF field around the Rabi frequency of the dressing field.