Periodically driving a many-body localized quantum system
By P. Bordia, H. Lüschen, U. Schneider, Michael Jason Knap, I. Bloch. Nature Physics, 2016
292 citations recorded by the source corpus.
Periodically driven quantum many-body systems can display rich dynamics and host exotic phases that are absent in their undriven counterparts. However, in the presence of interactions such systems are expected to eventually heat up to a simple infinite-temperature state. One possible exception is a periodically driven many-body localized system, in which heating is precluded by strong disorder. Here, we use a gas of ultracold fermionic potassium atoms in optical lattices to prepare and probe such a driven system and show that it is indeed stable for high enough driving frequency. Moreover, we find a novel regime in which the system is exceedingly stable even at low drive frequencies, a particular feature of our driving scheme. Our experimental findings are well supported by numerical simulations and may provide avenues for engineering novel phases in periodically driven matter. Many-body localization, which exhibits a fascinating interplay between disorder and interactions, can be studied using ultracold atoms in a quasiperiodic chain. Adding periodic driving makes things even more interesting.
Subfields: Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics
View Paper: https://www.semanticscholar.org/paper/2c50c10e8c42d1403e15bdaa0791181f35545492
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In Atomic and Molecular Physics, and Optics
- D. Abanin
- Maksym Serbyn
- I. Bloch
- Michael Jason Knap
- E. Altman
- S. Gopalakrishnan
- U. Schneider
- P. Bordia
In Statistical and Nonlinear Physics
Citations in the corpus
- Probing Slow Relaxation and Many-Body Localization in Two-Dimensional Quasiperiodic Systems (2017, background): “further provide fundamental insights into the MBL transition [46].”
- Equilibration and order in quantum Floquet matter (2017, unknown): “− ∑ s Jsσ z s σ z s+1+Hint for T1≤ t<T (4)”
- Colloquium : Many-body localization, thermalization, and entanglement (2018, background): “Subsequently, the delocalizing effect of coupling many 1D systems subject to identical quasiperiodic potential was experimentally studied by Bordia et al. (2016). In a different direction, Lukin et al. (2018) recently observed logarithmic spreading of entanglement in small BoseHubbard chains subject”