Spectral observation of symmetry-protected selection rules for dynamical high-dimensional parity in alignment magnetic resonance  

作　　者：Xu-Xing Geng Kai Jin Lu Zhou Wang-Wang Tang Guoqing Yang Shangqing Liang Shao-Ping Wu Guang-Ming Huang Gao-Xiang Li 

机构地区：[1]Department of Physics,Huazhong Normal University,Wuhan 430079,China [2]College of Electronics and Information,Hangzhou Dianzi University,Hangzhou 310018,China [3]State Key Laboratory of Precision Spectroscopy,School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2024年第10期1-11,共11页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12174139 and 12374330)。

摘　　要：Multidimensional Floquet-driven alignment systems with dynamical symmetry present various exotic phenomena and applications.However,there are challenges in directly characterizing large-spin dynamical symmetry from spectra.Here,we first observe the symmetry-protected selection rules of dynamical high-dimensional parity in a large-spin(F=4)system.We theoretically construct a Floquet-driven alignment system that can be used to reveal high-dimensional spatiotemporal symmetry.In the experiment,the system is implemented in Cs atomic gas subjected to two-dimensional Floquet-modulated magnetic resonance driving.By developing Floquet detection protocols of alignment double-sided spectra,we directly verify symmetry-protected selection rules of dynamical high-dimensional parity for large-spin systems.This work advances the exploration of dynamical symmetry to large spins,and unravels a universal Floquet scheme for the investigation of symmetry-protected selection rules.

关 键 词：dynamical high-dimensional symmetry symmetry-protected selection rules large-spin alignment magnetic resonance Floquet two-mode detection 

分 类 号：O469[理学—凝聚态物理]