Observation of many-body scarring in a Bose-Hubbard quantum simulator - INSPIRE

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Observation of many-body scarring in a Bose-Hubbard quantum simulator

Guo-Xian Su
(
- USTC, Hefei and
- Heidelberg U.
)
,
Hui Sun
(
- USTC, Hefei and
- Heidelberg U.
)
,
Ana Hudomal
(
- Leeds U.
)
,
Jean-Yves Desaules
(
- Leeds U.
)
,
Zhao-Yu Zhou
(
- USTC, Hefei and
- Heidelberg U.
)

Jan 3, 2022

27 pages

Published in:

Phys.Rev.Res. 5 (2023) 2, 023010

Published: Apr 5, 2023

e-Print:

2201.00821 [cond-mat.quant-gas]

DOI:

10.1103/PhysRevResearch.5.023010 (publication)

View in:

ADS Abstract Service

reference search157 citations

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Abstract: (APS)

The ongoing quest for understanding nonequilibrium dynamics of complex quantum systems underpins the foundation of statistical physics as well as the development of quantum technology. Quantum many-body scarring has recently opened a window into novel mechanisms for delaying the onset of thermalization by preparing the system in special initial states, such as the

Z_{2}

state in a Rydberg atom system. Here we realize many-body scarring in a Bose-Hubbard quantum simulator from previously unknown initial conditions such as the unit-filling state. We develop a quantum-interference protocol for measuring the entanglement entropy and demonstrate that scarring traps the many-body system in a low-entropy subspace. Our work makes the resource of scarring accessible to a broad class of ultracold-atom experiments, and it allows one to explore the relation of scarring to constrained dynamics in lattice gauge theories, Hilbert space fragmentation, and disorder-free localization.

Note:

8+5 pages, 6+3 figures

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