Lattice control of nonergodicity in a polar lattice gas

authored by: H. Korbmacher, P. Sierant, W. Li, X. Deng, J. Zakrzewski, L. Santos
Abstract: Strong enough intersite interactions may result in lack of ergodicity in disorder-free many-body lattice systems. Ultracold dipolar gases in optical lattices provide an experimentally accessible platform for exploring this physics. Dipolar intersite interactions are usually assumed to decay with a fixed power law. We show that in a one-dimensional polar lattice gas the actual decay depends on the transversal confinement. This affects profoundly the particle dynamics, which mimics rather that of a system with an externally controllable effective power-law interaction. Our results show that the crucial role of the interaction decay on disorder-free localization may be flexibly studied in experiments with polar gases.
Organisation(s): QuantumFrontiers
Institute of Theoretical Physics
External Organisation(s): ICFO – The Institute of Photonic Sciences
Leibniz Supercomputing Centre
Jagiellonian University
Type: Article
Journal: Physical Review A
Volume: 107
ISSN: 2469-9926
Publication date: 05.01.2023
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Atomic and Molecular Physics, and Optics
Electronic version(s): https://doi.org/10.48550/arXiv.2207.06186 (Access: Open)
https://doi.org/10.1103/PhysRevA.107.013301 (Access: Closed)

BibTeX

@article{39ca37ef73b640d482b02dd43cbbbfd6,
title = "Lattice control of nonergodicity in a polar lattice gas",
abstract = "Strong enough intersite interactions may result in lack of ergodicity in disorder-free many-body lattice systems. Ultracold dipolar gases in optical lattices provide an experimentally accessible platform for exploring this physics. Dipolar intersite interactions are usually assumed to decay with a fixed power law. We show that in a one-dimensional polar lattice gas the actual decay depends on the transversal confinement. This affects profoundly the particle dynamics, which mimics rather that of a system with an externally controllable effective power-law interaction. Our results show that the crucial role of the interaction decay on disorder-free localization may be flexibly studied in experiments with polar gases.",
author = "H. Korbmacher and P. Sierant and W. Li and X. Deng and J. Zakrzewski and L. Santos",
note = "Funding Information: J.Z. thanks T. Chanda for help with TDVP implementation. We acknowledge support of the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy–EXC-2123 Quantum Frontiers–390837967, and FOR 2247. Some of the numerical computations have been possible thanks to PL-Grid Infrastructure. The work of J.Z. has been realized within the Opus Grant No. 2021/43/I/ST3/0114, financed by National Science Centre (Poland). X.D. acknowledges support of BMBF through DAQC. P.S. acknowledges support from Ministerio de Ciencia e Innovaci{\'o}n, Agencia Estatal de Investigaciones (R&D Project No. CEX2019-000910-S, AEI/10.13039/501100011033, Plan National FIDEUA PID2019-106901GB-I00, FPI), Fundaci{\'o} Privada Cellex, Fundaci{\'o} Mir-Puig, and from Generalitat de Catalunya (AGAUR Grant No. 2017 SGR 1341, CERCA program). ",
year = "2023",
month = jan,
day = "5",
doi = "10.48550/arXiv.2207.06186",
language = "English",
volume = "107",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "1",
}