SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 9: Quantum Gases: Bosons I
Q 9.5: Vortrag
Montag, 6. März 2023, 18:15–18:30, A320
Observation of many-body scarring in a Bose-Hubbard quantum simulator — Guo-Xian Su1, Hui Sun1, •Ana Hudomal2, Jean-Yves Desaules3, Zhao-Yu Zhou1, Bing Yang4, Jad C. Halimeh5, Zhen-Sheng Yuan6, Zlatko Papić3, and Jian-Wei Pan6 — 1Heidelberg University, Germany — 2Institute of Physics Belgrade, University of Belgrade, Serbia — 3University of Leeds, UK — 4Southern University of Science and Technology, China — 5LMU Munich, Germany — 6University of Science and Technology of China
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 Z2 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 [1]. Our measurements of entanglement entropy illustrate that scarring traps the many-body system in a low-entropy subspace. Further, we develop a quantum interference protocol to probe unequal-time correlations, and demonstrate the system’s return to the vicinity of the initial state by measuring single-site fidelity. Our work makes the resource of scarring accessible to a broad class of ultracold-atom experiments.
[1] G.-X. Su et al., arXiv:2201.00821 (2022).