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Dong, H., Gao, Y., Desaules, J.-Y. et al. (13 more authors) (2023) Disorder-tunable entanglement at infinite temperature. Science Advances, 9 (51). eadj3822. ISSN 2375-2548
Abstract
Emerging quantum technologies hold the promise of unravelling difficult problems ranging from condensed matter to high-energy physics while, at the same time, motivating the search for unprecedented phenomena in their setting. Here, we use a custom-built superconducting qubit ladder to realize non-thermalizing states with rich entanglement structures in the middle of the energy spectrum. Despite effectively forming an “infinite” temperature ensemble, these states robustly encode quantum information far from equilibrium, as we demonstrate by measuring the fidelity and entanglement entropy in the quench dynamics of the ladder. Our approach harnesses the recently proposed type of non-ergodic behavior known as “rainbow scar,” which allows us to obtain analytically exact eigenfunctions whose ergodicity-breaking properties can be conveniently controlled by randomizing the couplings of the model without affecting their energy. The on-demand tunability of quantum correlations via disorder allows for in situ control over ergodicity breaking, and it provides a knob for designing exotic many-body states that defy thermalization.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Copyright© 2023 The Authors. Distributed under a Creative Commons Attribution License 4.0 (CC BY). |
Dates: |
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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) |
Funding Information: | Funder Grant number Leverhulme Trust RL-2019-015 Engineering and Physical Sciences Research Council EP/R513258/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 20 Nov 2023 10:13 |
Last Modified: | 22 Jul 2024 12:22 |
Published Version: | https://www.science.org/doi/10.1126/sciadv.adj3822 |
Status: | Published |
Publisher: | American Association for the Advancement of Science |
Identification Number: | 10.1126/sciadv.adj3822 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:205475 |
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