中国物理B ›› 2024, Vol. 33 ›› Issue (1): 10303-10303.doi: 10.1088/1674-1056/ad0cd1
Chao Zeng(曾超)1,2,3, Yue-Ran Shi(石悦然)4,5, Yi-Yi Mao(毛一屹)1,2,3, Fei-Fei Wu(武菲菲)1,2,3, Yan-Jun Xie(谢岩骏)1,2,3, Tao Yuan(苑涛)1,2,3, Han-Ning Dai(戴汉宁)1,2,3,†, and Yu-Ao Chen(陈宇翱)1,2,3
Chao Zeng(曾超)1,2,3, Yue-Ran Shi(石悦然)4,5, Yi-Yi Mao(毛一屹)1,2,3, Fei-Fei Wu(武菲菲)1,2,3, Yan-Jun Xie(谢岩骏)1,2,3, Tao Yuan(苑涛)1,2,3, Han-Ning Dai(戴汉宁)1,2,3,†, and Yu-Ao Chen(陈宇翱)1,2,3
摘要: We investigated the one-dimensional diamond ladder in the momentum lattice platform. By inducing multiple two- and four-photon Bragg scatterings among specific momentum states, we achieved a flat band system based on the diamond model, precisely controlling the coupling strength and phase between individual lattice sites. Utilizing two lattice sites couplings, we generated a compact localized state associated with the flat band, which remained localized throughout the entire time evolution. We successfully realized the continuous shift of flat bands by adjusting the corresponding nearest neighbor hopping strength, enabling us to observe the complete localization process. This opens avenues for further exploration of more complex properties within flat-band systems, including investigating the robustness of flat-band localized states in disordered flat-band systems and exploring many-body localization in interacting flat-band systems.
中图分类号: (Phases: geometric; dynamic or topological)