Flat Club - Quasicrystals - Hepeng Yao

02.12.2022 12:00 – 14:00

Hepeng Yao

Quasicrystals are a fascinating state of matter which is characterized by long-range but nonperiodic order. They display a number of intriguing properties, including unusual localization properties, fractal properties and anomalous critical scalings. Such structures spontaneously appear in the growth of certain alloys. Also, artificial quasicrystals can now be engineered by using photonic crystals, quantum fluids of light, and ultracold quantum gases. In this talk, I will first introduce the basic concept related to quasicrystals such as quasiperiodicity, localization and fractality. Then, I will take the ultracold atom system as an example to show recent results on 2D quasicrystal [1-3], where I will mainly focus on the Bose glass localization transition and fractality.
[1] D. Johnstone, P. Öhberg, and C. W. Duncan, Phys. Rev. A 100, 053609 (2019)
[2] M. Sbroscia, K. Viebahn, E. Carter, J.-C. Yu, A. Gaunt, and U. Schneider, Phys. Rev. Lett. 125, 200604 (2020)
[3] R. Gautier, H. Yao, and L. Sanchez-Palencia, Phys. Rev. Lett. 126, 110401 (2021)

More information: https://flatclub.dqmp.ch/


Bâtiment: Ecole de Physique

Auditoire Stueckelberg
Time: Pizza: 12:00, Start discussion: 12:30

Organisé par

Département de physique de la matière quantique


Hepeng Yao, Université de Genève, DQMP

entrée libre


Catégorie: Conférence - débat