Phonon-assisted coherent transport of excitations in Rydberg-dressed atom arrays

• URL: http://arxiv.org/abs/2307.04471v1
• Date: Mon, 10 Jul 2023 10:40:47 GMT
• Title: Phonon-assisted coherent transport of excitations in Rydberg-dressed atom arrays
• Authors: Arkadiusz Kosior, Servaas Kokkelmans, Maciej Lewenstein, Jakub Zakrzewski, and Marcin P{\l}odzie\'n
• Abstract summary: Polarons arise from the self-trapping interaction between electrons and lattice distortions in a solid. We present a microscopic model that exhibits a diverse range of dynamic behavior, arising from the intricate interplay between excitation-phonon coupling terms. This work contributes to the understanding of polaron dynamics with their potential applications in coherent quantum transport.
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• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Polarons, which arise from the self-trapping interaction between electrons and lattice distortions in a solid, have been known and extensively investigated for nearly a century. Nevertheless, the study of polarons continues to be an active and evolving field, with ongoing advancements in both fundamental understanding and practical applications. Here, we present a microscopic model that exhibits a diverse range of dynamic behavior, arising from the intricate interplay between two excitation-phonon coupling terms. The derivation of the model is based on an experimentally feasible Rydberg-dressed system with dipole-dipole interactions, making it a promising candidate for realization in a Rydberg atoms quantum simulator. Remarkably, our analysis reveals a growing asymmetry in Bloch oscillations, leading to a macroscopic transport of non-spreading excitations under a constant force. Moreover, we compare the behavior of excitations, when coupled to either acoustic or optical phonons, and demonstrate the robustness of our findings against on-site random potential. Overall, this work contributes to the understanding of polaron dynamics with their potential applications in coherent quantum transport and offers valuable insights for research on Rydberg-based quantum systems.

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