您身边的网站建设顾问,哪个网站可以接项目做,小程序代运营多少钱一个月,专业定制网站需要什么技能报告时间#xff1a;5月15日 周三 下午2:00报告地点#xff1a;实验室一楼会议室报告人#xff1a;武汉物理与数学研究所江开军研究员报告题目#xff1a; Phase transition in a spin-orbital-angular-momentum coupled Bose-Einstein condensate报告摘要#xff1a;Coup…报告时间5月15日 周三 下午2:00报告地点实验室一楼会议室报告人武汉物理与数学研究所江开军研究员报告题目 Phase transition in a spin-orbital-angular-momentum coupled Bose-Einstein condensate报告摘要Coupling between particle’s spin and orbital motion is ubiquitous in atoms, photons, solid materials and many other systems. It contributes to the topological properties like quantum-Hall effect in solid materials and electronic fine structure in atoms. Ultracold atoms with a high tunability provides an ideal platform to study spin-orbit (SO) coupling. Spin-linear-momentum (SLM) coupling has been observed in quantum gases and subsequently a variety of exotic quantum states have been explored. While the experimental study on the other kind of SO coupling, namely the spin-orbital-angular-momentum (SOAM) coupling, is still lacking.In this talk, I will report the experimental observation of the ground-state phase diagram of the SOAM coupled Bose-Einstein condensate. By inducing a Raman transition using a pair of Gaussian and Laguerre-Gaussian (LG) laser beams, we realize SOAM coupling of ultracold atoms. We observe phase transitions when the two-photon Raman coupling strength or detuning approaches the critical value. The phase transitions are classified as the first order, which features a discontinuous jump of the angular momentum (OAM) and the spin polarization. We demonstrate the hysteresis loop across the first-order phase transition. The role of interatomic interaction on the phase transition is also elucidated.[1] D. Zhang, T. Gao, P. Zou, L. Kong, R. Li, X. Shen, X. Chen, S. Peng, M. Zhan, H. Pu, and K. Jiang, Phys. Rev. Lett. 122, 110402 (2019)[2] T. Gao, J. Pan, D. Zhang, L. Kong, R. Li, X. Shen, X. Chen, S. Peng, M. Zhan, W. V. Liu, and K. Jiang, arXiv: 1805.04727 (2018)[3] T. Gao, D. Zhang, L. Kong, R. Li , K. Jiang, Chin. Phys. Lett. 35, 086701 (2018)