Reference : Probing quantum chaos in multipartite systems
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
http://hdl.handle.net/10993/52150
Probing quantum chaos in multipartite systems
English
Cao, Zan [1School of Physical Science and Technology, Soochow University, Suzhou 215006, China]
Xu, Zhenyu [School of Physical Science and Technology, Soochow University, Suzhou 215006, China]
Del Campo Echevarria, Adolfo mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
2022
Physical Review Research
Yes
International
[en] Understanding the emergence of quantum chaos in multipartite systems is challenging in the presence of interactions. We show that the contribution of the subsystems to the global behavior can be revealed by probing the full counting statistics of the local, total, and interaction energies. As in the spectral form factor, signatures of quantum chaos in the time domain dictate a dip-ramp-plateau structure in the characteristic function, i.e., the Fourier transform of the eigenvalue distribution. With this approach, we explore the fate of chaos in interacting subsystems that are locally maximally chaotic. Global quantum chaos can be suppressed at strong coupling, as illustrated with coupled copies of random-matrix Hamiltonians and of the Sachdev-Ye-Kitaev model. Our method is amenable to experimental implementation using single-qubit interferometry.
http://hdl.handle.net/10993/52150
10.1103/PhysRevResearch.4.033093

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
Cao 22 Probing qchaos.pdfPublisher postprint950.96 kBView/Open

Bookmark and Share SFX Query

All documents in ORBilu are protected by a user license.