Floquet Bound States in a Driven Two-Particle Bose-Hubbard Model with an Impurity

作     者：钟宏华 周政 朱博 柯勇贯 李朝红 

作者机构：TianQin Research Center and School of Physics and AstronomySun Yat-Sen University(Zhuhai Campus) School of Physics and Electronics Central South University Department of Physics Hunan Institute of Technology 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2017年第34卷第7期

页      面：29-32页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China under Grants Nos 11374375,11574405,11465008 and 11547125 the Hunan Provincial Natural Science Foundation under Grant Nos 2015JJ4020 and 2015JJ2114 the Scientific Research Fund of Hunan Provincial Education Department under Grant No 14A118 

主　　题：Floquet Bound States in a Driven Two-Particle Bose-Hubbard Model with an Impurity BIC 

摘      要：We investigate how the driving field affects the bound states in the one-dimensional two-particle Bose-Hubbard model with an impurity. In the high-frequency regime, compared with the static lattice [Phys. Rev. Lett. 109 （2012） 116405], a new type of Floquet bound state can be obtained even for a weak particle-particle interaction by tuning the driving amplitude. Moreover, the localization degree of the F1oquet bound molecular state can be adjusted by tuning the driving frequency, and even the Floquet bound molecular state can be changed into the Floquet extended state when the driving frequency is below a critical value. Our results provide an efficient way to manipulate bound states in the many-body systems.