Characterizing the Decoherence of Three-Atom Entangled States Near Förster Resonance

We recently demonstrated coherent excitation of entangled states of three Rydberg atoms near a Förster resonance in ⁸⁵Rb [1]. The coherence was proved using an optical rotary echo technique. In this poster, we expand on those measurements to determine the decoherence time. We present progress towards fully characterizing decoherence using Ramsey interferometry. The triply-excited entangled states are created in a disordered optical dipole trap. Therefore, our scheme shows promise for the application of three-atom entanglement to quantum protocols in simple atomic systems.

[1] arXiv:2206.14899