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arXiv · 2404.12371

Long-lived oscillations of metastable states in neutral atom systems

Siva Darbha·Milan Kornjača·Fangli Liu·Jan Balewski·Mark R. Hirsbrunner·Pedro L. S. Lopes·Sheng-Tao Wang·Roel Van Beeumen·Katherine Klymko·Daan Camps
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Abstract

Metastable states arise in a range of quantum systems and can be observed in various dynamical scenarios, including decay, bubble nucleation, and long-lived oscillations. The phenomenology of metastable states has been examined in quantum many-body systems, notably in 1D ferromagnetic Ising spin systems and superfluids. In this paper, we study long-lived oscillations of metastable and ground states in 1D antiferromagnetic neutral atom chains with long-range Rydberg interactions. We use a staggered local detuning field to achieve confinement. Using theoretical and numerical models, we identify novel spectral signatures of quasiparticle oscillations distinct to antiferromagnetic neutral atom systems and interpret them using a classical energy model of short-range meson repulsion. Finally, we evaluate the experimental accessibility of our proposed setup on current neutral-atom platforms and discuss experimental feasibility and constraints.

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Siva Darbha, Milan Kornjača, Fangli Liu, Jan Balewski, Mark R. Hirsbrunner, Pedro L. S. Lopes, Sheng-Tao Wang, Roel Van Beeumen, Katherine Klymko, Daan Camps. 2024-04-18. Long-lived oscillations of metastable states in neutral atom systems. https://doi.org/10.1103/physrevb.110.155114

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