物理学院“博约学术论坛”系列报告第 109 期

题目：Magnetic solitons in a binary Bose-Einstein condensate
报告人：曲春雷 博士（BEC Center, University of Trento, Italy）
时  间：2017年5月19日(周五)下午3:00
地  点：华体会体育 中心教学楼610
Abstract:
    Since the first experimental realization of Bose-Einstein condensation (BEC) in 1995, many intriguing physics have been observed with ultracold atomic gases. For instance, solitons, the fascinating topological excitations of nonlinear systems that can move in their medium without losing their shape, have been engineered in BEC. I will talk about our recent results on the investigation of a new type of soliton, magnetic soliton, in a binary BEC. In the absence and in the presence of a coherent coupling between the two components, the magnetic soliton solutions exhibit interesting distinct features [1,2]. I will also briefly discuss our recent experimental observation of the spin-dipole oscillation and polarizability of a binary condensate [3].
 [1] C. Qu, L. P. Pitaevskii, S. Stringari, Phys. Rev. Lett. 116, 160402 (2016).
 [2] C. Qu, M. Tylutki, S.Stringari, L. P. Pitaevskii, Phys. Rev. A 95, 033614 (2017).
 [3] T. Bienaime, E. Fava, G. Colzi, C. Mordini, S. Serafini, C. Qu, S. Stringari, G. Lamporesi, G. Ferrari, Phys. Rev. A 94, 063652 (2016).

 简历：
Dr. Chunlei Qu is currently a postdoctoral researcher at the BEC Center, University of Trento in Italy. He obtained his B.A. and M.S. in Physics from Beijing Institute of Technology and received the Ph.D. in Physics from the University of Texas at Dallas in 2015. Dr. Qu has authored more than 20 publications, including three in Nature communications, four in Physical Review Letters. His research interest includes Bose-Einstein condensation, spin-orbit coupled atomic gas, topological superfluids and Majorana Fermions. 作为主要作者发表SCI论文27篇，其中3 Nature Communications, 4 Physical Review Letters, 15 Physical Review A。