Interacting atoms in Rydberg ensembles

I will explore the physics of interacting collective Rydberg excitations, also known as Rydberg superatoms. Compared with ordered arrays, the ensembles easily allow for the usage of many more atoms, giving us much stronger coupling to light via superradiance, without the use of any cavities. However, interactions between atoms which are localised at random positions are harder to both simulate and manage in the experiment. I will propose and show how those interactions can be leveraged for quantum metrology, diving into the models of collective decoherence of superatom states. In particular, I will explore our two-body interaction model and how it relates to an effective quantum metrological model.

Reference: S. Kurzyna et al., Microwave-field quantum metrology with error correction enabled by Rydberg atoms, arXiv:2505.01506