Collective atom-cavity coupling and non-linear dynamics with atoms with multilevel ground states

Abstract

We investigate experimentally and theoretically the collective coupling between atoms with multilevel ground state manifolds and an optical cavity mode. In our setup the cavity field optically pumps populations among the ground states. The ensuing dynamics can be conveniently described by means of an effective dynamical atom-cavity coupling strength that depends on the occupation of the individual states and their coupling strengths with the cavity mode. This leads to a dynamical backaction of the atomic populations on the atom-cavity coupling strength which results in a non-exponential relaxation dynamics. We experimentally observe this effect with laser-cooled ${}^{87}$Rb atoms, for which we monitor the collective normal-mode splitting in real time. Our results show that the multilevel structure of electronic ground states can significantly alter the relaxation behavior in atom-cavity settings as compared to ensembles of two-level atoms.

References in corpus (8)

• Cold atoms in cavity-generated dynamical optical potentials
• Suppressing and restoring the Dicke superradiance transition by dephasing and decay
• Interaction-induced impeding of decoherence and anomalous diffusion
• Emergent dark states from superradiant dynamics in multilevel atoms in a cavity
• Cavity QED with Multiple Hyperfine Levels
• Real-time detection of Rydberg state dynamics of cold atoms using an optical cavity
• Ground state bistability of cold atoms in a cavity
• Coupling of magnetic and optomechanical structuring in cold atoms

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• Dissipative phase transition: from qubits to qudits
• Deep quantum Monte Carlo approach for polaritonic chemistry
• Quantum bistability in the hyperfine ground state of atoms
• Demonstration of strong coupling of a subradiant atom array to a cavity vacuum
• Superquantization rule for multistability in driven-dissipative quantum systems