一、题目:自旋-轨道角动量耦合作用超流费米气体中的角动量配对机制
二、主讲人:王亮亮
三、时间:2020年4月16日(星期四),下午15:00
四、报告方式:钉钉在线, 请扫码进群
内容摘要: Fulde-Ferrell-Larkin-Ovchinnikov(FFLO)态是具有有限动量库珀配对的奇特超导态[1,2]。由于新超导材料的发现,冷原子物理的发展,FFLO态的实验寻找和理论研究引起了人们极大的兴趣。最近,一种新型自旋轨道耦合作用,自旋-轨道角动量耦合在超冷原子气体中实现[3,4],为在角动量空间观测有限库珀配对的FFLO态提供了一种新的途径。在自旋-轨道角动量耦合作用和双光子失谐的共同作用下,超流费米气体中的费米面对称破缺,原子之间会倾向于非零的角动量中心配对,诱导出奇异的FFLO态。本工作拟探讨自旋-轨道角动量耦合在配对机制中的作用,验证非零角动量配对出现,为实现FFLO态提供新思路。
主讲人简介:王亮亮,中科院物理所博士,西湖大学理学院助理研究员。主要从事的是自旋轨道耦合作用下的超冷费米气体研究,包括拓扑超流费米气体中Majorana 费米子,自旋-轨道角动量耦合作用下的超流配对机制,以及玻色-费米双超流体系。已经在Physical Review A,Optics Communications,Scientific Reports发表SCI论文 6篇[5-11]。
参考文献:
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