Collective strong coupling of cold potassium atoms in a ring cavity

Abstract

We present experiments on ensemble cavity quantum electrodynamics with cold potassium atoms in a high-finesse ring cavity. Potassium-39 atoms are cooled in a two-dimensional magneto-optical trap and transferred to a three-dimensional trap which intersects the cavity mode. The apparatus is described in detail and the first observations of strong coupling with potassium atoms are presented. Collective strong coupling of atoms and light is demonstrated via the splitting of the cavity transmission spectrum and the avoided crossing of the normal modes.

Published version (open access at publisher)

References in corpus (6)

• Cold atoms in cavity-generated dynamical optical potentials
• Efficient and long-lived quantum memory with cold atoms inside a ring cavity
• Mechanisms for Lasing with Cold Atoms as the Gain Medium
• Heterodyne non-demolition measurements on cold atomic samples: towards the preparation of non-classical states for atom interferometry
• Polarization spectroscopy and magnetically-induced dichroism of the potassium D2 lines
• Cavity QED with Multiple Hyperfine Levels

Cited by in corpus (4)

• Monolithic bowtie cavity traps for ultra-cold gases
• Unidirectional spin transport of a spin-orbit-coupled atomic matter wave using a moving Dirac $\delta$-potential well
• Cooper pair polaritons in cold fermionic atoms within a cavity
• Coherence time of a cold-atom laser below threshold