[en] We demonstrate how the initial state of ultracold atoms in an optical lattice controls the emergence of ergodic dynamics as the underlying spectral structure is tuned into the quantum chaotic regime. Distinct initial states' chaos threshold values in terms of tunneling as compared to interaction strength are identified, as well as dynamical signatures of the chaos transition, on the level of experimentally accessible observables and time scales.
Disciplines :
Physics
Author, co-author :
Pausch, Lukas ; Université de Liège - ULiège > Département de physique > Optique quantique
Carnio, Edoardo G ; Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany ; EUCOR Centre for Quantum Science and Quantum Computing, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany
Buchleitner, Andreas; Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany ; EUCOR Centre for Quantum Science and Quantum Computing, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany
Rodríguez, Alberto ; Departamento de Física Fundamental, Universidad de Salamanca, E-37008 Salamanca, Spain ; Instituto Universitario de Física Fundamental y Matemáticas (IUFFyM), Universidad de Salamanca, E-37008 Salamanca, Spain
Language :
English
Title :
How to seed ergodic dynamics of interacting bosons under conditions of many-body quantum chaos.
Publication date :
2025
Journal title :
Reports on Progress in Physics
ISSN :
0034-4885
eISSN :
1361-6633
Publisher :
Institute of Physics Publishing (IOP), England
Volume :
88
Issue :
5
Pages :
057602
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
AEI - Agencia Estatal de Investigación DFG - Deutsche Forschungsgemeinschaft ERDF - European Regional Development Fund FWO - Fonds Wetenschappelijk Onderzoek Vlaanderen
Funding text :
A R thanks Marcos Rigol for helpful discussions. The authors acknowledge support by the state of Baden-W\u00FCrttemberg through bwHPC and the German Research Foundation (DFG) through Grants No. INST 40/467-1 FUGG (JUSTUS cluster), No. INST 40/575-1 FUGG (JUSTUS 2 cluster), and No. 402552777, and by Ministerio de Ciencia e Innovaci\u00F3n/Agencia Estatal de Investigaci\u00F3n (Spain) through Grant No. PID2020-114830GB-I00. E.G.C. acknowledges support from the Georg H Endress foundation. This project (EOS 40007526) has received funding from the FWO and F.R.S-FNRS under the Excellence of Science (EOS) programme. This research has made use of the high performance computing resources of the Castilla y Le\u00F3n Supercomputing Center (SCAYLE, www.scayle.es), financed by the European Regional Development Fund (ERDF), and of the CSUC (Consorci de Serveis Universitaris de Catalunya) supercomputing resources. We thankfully acknowledge RES resources provided by the Galician Supercomputing Center (CESGA) in FinisTerrae III to activity FI-2024-2-0027. The supercomputer FinisTerrae III and its permanent data storage system have been funded by the Spanish Ministry of Science and Innovation, the Galician Government and the European Regional Development Fund (ERDF).
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Note that this staggered state is not uniquely defined, since the sites may be sorted into any order without changing the energy. However, as they all have the same energy and similar energy widths, they will exhibit qualitatively the same dynamical behavior.
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