极化子
拓扑(电路)
激子
光子学
物理
光子晶体
自旋(空气动力学)
凝聚态物理
联轴节(管道)
激子极化
光电子学
材料科学
数学
热力学
组合数学
冶金
作者
Wenjing Liu,Zhurun Ji,Yuhui Wang,Gaurav Modi,Min-Soo Hwang,Biyuan Zheng,Volker J. Sorger,Anlian Pan,Ritesh Agarwal
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2020-10-30
卷期号:370 (6516): 600-604
被引量:87
标识
DOI:10.1126/science.abc4975
摘要
Polaritons with a twist The ability to design and fabricate optical systems with tunable topological features makes them especially attractive for developing analogs of topological condensed matter systems, which by themselves tend to be fixed or limited in their tunability. Liu et al. now show that the combination of a two-dimensional material with a photonic crystal can be used to develop an analogous quantum spin Hall system. The strong coupling between the monolayer tungsten disulfide excitons with a nontrivial hexagonal photonic crystal gives rise to helical topological polaritons observed at up to 200 kelvin. The topological polaritons can be actively tuned by temperature and may further be manipulated with electric or magnetic fields, thereby providing a flexible platform with which to explore exotic topological phenomena and new phases of quantum matter. Science , this issue p. 600
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