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arXiv · 2201.09590

Ultrafast Many-Body Dynamics in an Ultracold Rydberg-Excited Atomic Mott Insulator

V. Bharti·S. Sugawa·M. Mizoguchi·M. Kunimi·Y. Zhang·S. de Léséleuc·T. Tomita·T. Franz·M. Weidemüller·K. Ohmori
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Abstract

We report the observation and control of ultrafast non-equilibrium many-body electron dynamics in Rydberg-excited spatially-ordered ultracold atoms created from a three-dimensional unity-filling atomic Mott insulator. By implementing time-domain Ramsey interferometry with attosecond precision in our Rydberg atomic system, we observe picosecond-scale ultrafast many-body dynamics that is essentially governed by the emergence and evolution of many-body correlations between long-range interacting atoms in an optical lattice. We analyze our observations with different theoretical approaches and find that quantum fluctuations have to be included beyond semi-classical descriptions to describe the observed dynamics. Our Rydberg lattice platform combined with an ultrafast approach, which is robust against environmental noises, opens the door for simulating strongly-correlated electron dynamics by long-range van der Waals interaction and resonant dipole-dipole interaction to the charge-overlapping regime in synthetic ultracold atomic crystals.

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V. Bharti, S. Sugawa, M. Mizoguchi, M. Kunimi, Y. Zhang, S. de Léséleuc, T. Tomita, T. Franz, M. Weidemüller, K. Ohmori. 2022-01-24. Ultrafast Many-Body Dynamics in an Ultracold Rydberg-Excited Atomic Mott Insulator. https://doi.org/10.1103/physrevlett.131.123201

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