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This research theoretically demonstrates the existence of quasi-solitons in Rydberg atom chains, offering a pathway to robust energy transport and quantum information transfer despite typical thermalization effects. By leveraging non-ergodic dynamics and quantum many-body scars, these excitations maintain long coherence times suitable for implementation on current Rydberg atom simulators. The study bridges classical nonlinear systems with quantum physics, highlighting potential applications in anomalous energy transport within strongly correlated arrays.
Quasi-solitons in Rydberg atom chains
arXiv:2507.13196v2 Announce Type: replace Abstract: Solitons - localized wave packets that travel without spreading - play a central role in understanding transport and properties of nonlinear systems. In quantum many-body systems, however, such robust excitations are typically destroyed by thermalization. Here, we theoretically demonstrate the existence of solitonic excitations in high-energy states of Rydberg atom chains in the regime of strong nearest-neighbor Rydberg blockade. These localized wave packets propagate directionally atop a special class of reviving initial states related to quantum many-body scars and are capable of carrying energy. Exhibiting long coherence times, these states constitute a form of non-ergodic quantum dynamics and can be efficiently implemented on Rydberg atom simulators. In this work, in addition to a phenomenological description of solitons, we identify their counterpart in a classical nonlinear dynamical system, demonstrate their potential use in quantum information transfer, and conjecture their relevance for anomalous energy transport reported in numerical studies of Rydberg atom arrays.
Abstract:Solitons - localized wave packets that travel without spreading - play a central role in understanding transport and properties of nonlinear systems. In quantum many-body systems, however, such robust excitations are typically destroyed by thermalization. Here, we theoretically demonstrate the existence of solitonic excitations in high-energy states of Rydberg atom chains in the regime of strong nearest-neighbor Rydberg blockade. These localized wave packets propagate directionally atop a special class of reviving initial states related to quantum many-body scars and are capable of carrying energy. Exhibiting long coherence times, these states constitute a form of non-ergodic quantum dynamics and can be efficiently implemented on Rydberg atom simulators. In this work, in addition to a phenomenological description of solitons, we identify their counterpart in a classical nonlinear dynamical system, demonstrate their potential use in quantum information transfer, and conjecture their relevance for anomalous energy transport reported in numerical studies of Rydberg atom arrays.
Updated to the published version in Nature Communications. 9 pages + 17 pages of Supplementary Information
Quantum Physics (quant-ph); Quantum Gases (cond-mat.quant-gas); Statistical Mechanics (cond-mat.stat-mech); Strongly Correlated Electrons (cond-mat.str-el)
arXiv:2507.13196 [quant-ph]
(or arXiv:2507.13196v2 [quant-ph] for this version)
https://doi.org/10.1038/s41467-026-75598-1 DOI(s) linking to related resources
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