Spin-momentum coupling in a cavity QED

SPICE Workshop on Quantum Spinoptics, June 13th - 15th 2023

Oksana Chelpanova

In this talk, we present a cavity quantum electrodynamics (QED) implementation of a model where emergent spin degrees of freedom are constructed from momentum and internal spin states. The effective model features four atomic levels coupled to two cavity modes. By employing a ramp and quench of two photon-matter couplings, the system dynamics can be trapped away from equilibrium for tunable long periods of time, in a way reminiscent to non-thermal fixed point dynamics. We provide a detailed discussion of the setup and parameters required to realize this model in the ETH/Zurich experiment.