Exécution de notre outil de synthèse sur un nouvel article

Vérifiez l’article ci-dessous, puis lancez sa synthèse.


Floquet symmetry-protected topological phases in cold atomic systems

Ionut-Dragos Potirniche, Andrew C. Potter, Monika Schleier-Smith, Ashvin Vishwanath, Norman Y. Yao

arXiv: 1610.07611v1 (cond-mat.quant-gas)

Résumé : We propose and analyze two distinct routes toward realizing interacting symmetry-protected topological (SPT) phases via periodic driving. First, we demonstrate that a driven transverse-field Ising model can be used to engineer complex interactions which enable the emulation of an equilibrium SPT. This phase remains stable only within a parametric time scale controlled by the driving frequency, beyond which its topological features break down. To overcome this issue, we consider an alternate route based upon realizing an intrinsically Floquet SPT phase that does not have any equilibrium analogue. In both cases, we show that disorder, leading to many-body localization, prevents runaway heating and enables the observation of coherent quantum dynamics at high energy densities. Furthermore, we clarify the distinction between the equilibrium and Floquet SPT phases by identifying a unique micro-motion-based entanglement spectrum signature of the latter. Finally, we propose a unifying implementation in a one dimensional chain of Rydberg-dressed atoms and show that protected edge modes are observable on realistic experimental time-scales.

Soumis à arXiv le 24 Oct. 2016