量子科技研究院seminar第22讲暨物理学科Seminar第684讲 半导体拓扑光子学与新颖量子特性

创建时间:  2024/09/11  龚惠英   浏览次数:   返回

报告题目 (Title):Semiconductor Topological Photonics and Novel Quantum Functions(半导体拓扑光子学与新颖量子特性)

报告人 (Speaker):胡晓 教授(金沙威尼斯欢乐娱人城量子科技研究院)

报告时间 (Time):2024年9月12日(周四) 15:30-16:00

报告地点 (Place):校本部行政办公楼报告厅

邀请人 (Inviter):钟建新 教授

主办部门:金沙威尼斯欢乐娱人城量子科技研究院,金沙威尼斯欢乐娱人城科研管理部高等研究院,金沙威尼斯欢乐娱人城物理系

摘要 (Abstract):

Honeycomb lattice plays an extremely important role in fostering the concept of topology with the renowned Haldane model and Kane-Mele model as the icons. We have found another method to generate topological states on honeycomb lattice where only nearest-neighbor (n.n.) hoppings are involved. The topology is induced by a texture in n.n. interactions respecting C6v symmetry, which opens a bandgap accompanied by a p-d band inversion. The C2T symmetry enables the pseudospin degree of freedom, and the topological edge state with pseudospin-momentum locking constitutes an analogue of the helical edge state in quantum spin Hall insulators. I will explain this scheme mainly focusing on semiconductor photonic crystals, and discuss perspectives of possible semiconductor topological photonics and related quantum functions.

上一条:量子科技研究院seminar第23讲暨物理学科Seminar第685讲 二维材料光学晶体

下一条:量子科技研究院seminar第21讲暨物理学科Seminar第683讲 探索拓扑材料:无能耗电子器件的设计


量子科技研究院seminar第22讲暨物理学科Seminar第684讲 半导体拓扑光子学与新颖量子特性

创建时间:  2024/09/11  龚惠英   浏览次数:   返回

报告题目 (Title):Semiconductor Topological Photonics and Novel Quantum Functions(半导体拓扑光子学与新颖量子特性)

报告人 (Speaker):胡晓 教授(金沙威尼斯欢乐娱人城量子科技研究院)

报告时间 (Time):2024年9月12日(周四) 15:30-16:00

报告地点 (Place):校本部行政办公楼报告厅

邀请人 (Inviter):钟建新 教授

主办部门:金沙威尼斯欢乐娱人城量子科技研究院,金沙威尼斯欢乐娱人城科研管理部高等研究院,金沙威尼斯欢乐娱人城物理系

摘要 (Abstract):

Honeycomb lattice plays an extremely important role in fostering the concept of topology with the renowned Haldane model and Kane-Mele model as the icons. We have found another method to generate topological states on honeycomb lattice where only nearest-neighbor (n.n.) hoppings are involved. The topology is induced by a texture in n.n. interactions respecting C6v symmetry, which opens a bandgap accompanied by a p-d band inversion. The C2T symmetry enables the pseudospin degree of freedom, and the topological edge state with pseudospin-momentum locking constitutes an analogue of the helical edge state in quantum spin Hall insulators. I will explain this scheme mainly focusing on semiconductor photonic crystals, and discuss perspectives of possible semiconductor topological photonics and related quantum functions.

上一条:量子科技研究院seminar第23讲暨物理学科Seminar第685讲 二维材料光学晶体

下一条:量子科技研究院seminar第21讲暨物理学科Seminar第683讲 探索拓扑材料:无能耗电子器件的设计