Hudomal, A orcid.org/0000-0002-2782-2675, Desaules, J-Y orcid.org/0000-0002-3749-6375, Mukherjee, B et al. (3 more authors) (2022) Driving quantum many-body scars in the PXP model. Physical Review B, 106 (10). 104302. ISSN 2469-9950
Abstract
Periodic driving has been established as a powerful technique for engineering novel phases of matter and intrinsically out-of-equilibrium phenomena such as time crystals. Recent paper by Bluvstein et al. [Science 371, 1355 (2021)] has demonstrated that periodic driving can also lead to a significant enhancement of quantum many-body scarring, whereby certain nonintegrable systems can display persistent quantum revivals from special initial states. Nevertheless, the mechanisms behind driving-induced scar enhancement remain poorly understood. Here we report a detailed study of the effect of periodic driving on the PXP model describing Rydberg atoms in the presence of a strong Rydberg blockade—the canonical static model of quantum many-body scarring. We show that periodic modulation of the chemical potential gives rise to a rich phase diagram, with at least two distinct types of scarring regimes that we distinguish by examining their Floquet spectra. We formulate a toy model, based on a sequence of square pulses, that accurately captures the details of the scarred dynamics and allows for analytical treatment in the large-amplitude and high-frequency driving regimes. Finally, we point out that driving with a spatially inhomogeneous chemical potential allows to stabilize quantum revivals from arbitrary initial states in the PXP model, via a mechanism similar to prethermalization.
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Copyright, Publisher and Additional Information: | ©2022 American Physical Society. This is an author produced version of an article, published in Physical Review B. Uploaded in accordance with the publisher's self-archiving policy. | ||||
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Institution: | The University of Leeds | ||||
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Theoretical Physics (Leeds) | ||||
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Depositing User: | Symplectic Publications | ||||
Date Deposited: | 18 Nov 2022 12:11 | ||||
Last Modified: | 20 Dec 2022 16:47 | ||||
Status: | Published | ||||
Publisher: | American Physical Society | ||||
Identification Number: | https://doi.org/10.1103/physrevb.106.104302 | ||||
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