New approach to measuring topological phase transitions utilizing Floquet technology  

作　　者：Xue-Ying Yang Wei Wu Ping-Xing Chen 杨雪滢;吴伟;陈平形(College of Sciences,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]College of Sciences,National University of Defense Technology,Changsha 410073,China

出　　处：《Chinese Physics B》2024年第9期282-288,共7页中国物理B（英文版）

基　　金：the National Natural Science Foun-dation of China(Grant Nos.11904402,12174447,12074433,12004430,and 12174448).

摘　　要：The Floquet technique provides a novel anomalous topological phase for non-equilibrium phase transitions.Based on the high symmetry of the quantum anomalous Hall model,the findings suggest a one-to-one correspondence between the average spin texture and the Floquet quasi-energy spectrum.A new approach is proposed to directly measure the quasienergy spectrum,replacing previous measurements of the average spin texture.Finally,we proposed a reliable experimental scheme based on ion trap platforms.This scheme markedly reduces the measurement workload,improves the measurement fidelity,and is applicable to multiple platforms such as cold atoms and nuclear magnetic resonance.

关 键 词：topological phase transition Floquet technique ion trap 

分 类 号：O469[理学—凝聚态物理]