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arXiv · 2111.02427

Stabilizing Disorder-Free Localization

Jad C. Halimeh·Hongzheng Zhao·Philipp Hauke·Johannes Knolle
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Abstract

Disorder-free localization is a paradigm of nonergodicity in translation-invariant quantum many-body systems hosting gauge symmetries. The quench dynamics starting from simple initial states, which correspond to extensive superpositions of gauge superselection sectors, exhibits many-body localization with the system dynamically inducing its own disorder. An open question concerns the stability of disorder-free localization in the presence of gauge-breaking errors, and whether processes due to the latter can be controllably suppressed. Here, we show that translation-invariant \textit{single-body gauge terms} induce a quantum Zeno effect that reliably protects disorder-free localization against errors up to times at least polynomial in the protection strength. Our experimentally feasible scheme not only shows that disorder-free localization can be reliably stabilized, but also opens promising prospects for its observation in quantum simulators.

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BibTeXRIS

Jad C. Halimeh, Hongzheng Zhao, Philipp Hauke, Johannes Knolle. 2021-11-03. Stabilizing Disorder-Free Localization. https://arxiv.org/abs/2111.02427

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