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

• URL: http://arxiv.org/abs/2201.09590v1
• Date: Mon, 24 Jan 2022 11:02:47 GMT
• Title: Ultrafast Many-Body Dynamics in an Ultracold Rydberg-Excited Atomic Mott Insulator
• Authors: V. Bharti, S. Sugawa, M. Mizoguchi, M. Kunimi, Y. Zhang, S. de L\'es\'eleuc, T. Tomita, T. Franz, M. Weidem\"uller, K. Ohmori
• Abstract summary: We report the observation and control of ultrafast non-equilibrium many-body electron dynamics in Rydberg-excited spatially-ordered ultracold insulator atoms. 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.
• Score: 0.36568268378590346
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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