Article (Scientific journals)
Decoherence rate in random Lindblad dynamics
Yang, Yifeng; Xu, Zhenyu; DEL CAMPO ECHEVARRIA, Adolfo
2024In Physical Review Research, 6 (2)
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Keywords :
Chaotics; Classical behavior; Decoherence; Decoherence rates; Lindblad; Lindblad operators; Open quantum systems; Quantum system; Time-scales; Upper limits; Physics and Astronomy (all); Quantum Physics; Physics - Statistical Mechanics; High Energy Physics - Theory
Abstract :
[en] Open quantum systems undergo decoherence, which is responsible for the transition from quantum to classical behavior. The time scale in which decoherence takes place can be analyzed using upper limits to its rate. We examine the dynamics of open chaotic quantum systems governed by random Lindblad operators sourced from Gaussian and Ginibre ensembles with Wigner-Dyson symmetry classes. In these systems, the ensemble-averaged purity decays monotonically as a function of time. This decay is governed by the decoherence rate, which is upper-bounded by the dimension of their Hilbert space and is independent of the ensemble symmetry. These findings hold upon mixing different ensembles, indicating the universal character of the decoherence rate limit. Moreover, our findings reveal that open chaotic quantum systems governed by random Lindbladians tend to exhibit the most rapid decoherence, regardless of the initial state. This phenomenon is associated with the concentration of the decoherence rate near its upper bound. Our work identifies primary features of decoherence in dissipative quantum chaos, with applications ranging from quantum foundations to high-energy physics and quantum technologies.
Disciplines :
Physics
Author, co-author :
Yang, Yifeng  ;  School of Physical Science and Technology, Soochow University, Suzhou, China
Xu, Zhenyu  ;  School of Physical Science and Technology, Soochow University, Suzhou, China
DEL CAMPO ECHEVARRIA, Adolfo   ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) ; Donostia International Physics Center
 These authors have contributed equally to this work.
External co-authors :
yes
Language :
English
Title :
Decoherence rate in random Lindblad dynamics
Publication date :
03 June 2024
Journal title :
Physical Review Research
eISSN :
2643-1564
Publisher :
American Physical Society
Volume :
6
Issue :
2
Peer reviewed :
Editorial reviewed
Funders :
National Natural Science Foundation of China
Fonds National de la Recherche Luxembourg
Funding text :
The authors are indebted to Lucas S\u00E1, Federico Balducci, and Pablo Azcona for insightful comments on the manuscript. This work was supported by the National Natural Science Foundation of China under Grant No.12074280 and by the Luxembourg National Research Fund (FNR), Grant No. 17132054.
Commentary :
13 pages, 6 figures
Available on ORBilu :
since 11 September 2024

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