Structured complex potentials for designer topological systems and devices in optics

光学拓扑系统和器件设计者的结构化复杂势

• 批准号: 18F18790
• 负责人: 樽茶 清悟
• 金额: $ 1.34万
• 依托单位: Institute of Physical and Chemical Research
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2018
• 资助国家: 日本
• 起止时间: 2018-11-09 至 2021-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18F18790/
• 关键词: topological; exciton-polariton; non-Hermitian; superfluidity; polariton; complex lattice; Haldane model

Experimentally demonstrated a new technique for non-resonant temporal modulation of polariton condensates via the beating of two, frequency-locked lasers. This allows for very fast modulation, and probing of non-adiabatic regimes of carrier relaxation.Combining the intensity beating with laser-wavefront tailoring, arbitrary spatial potentials with temporal modulation are formed. A 1D conveyor belt has been demonstrated, with the observation of tilted bands and a non-adiabatically pushed condensate. Further, using Laguerre-Gauss laser modes, preliminary measurements of a non-resonantly rotated polariton condensate were achieved.These new techniques enable as-yet unexplored methods of creating topological states of exciton-polaritons, e.g. by rapid rotation, or by shaken optical lattices.

实验证明了一种通过击败两个频率锁定激光器的击败，用于一种新技术，用于极化的凝结物的非共振时间调节。这允许非常快速的调制，并探测载体弛豫的非绝热状态。通过激光波剪裁启动强度跳动，形成了随时间调制的任意空间电势。已经证明了一条1D传送带，观察到倾斜带和非绝热推动的冷凝物。此外，使用Laguerre-Gauss激光模式，实现了非旋转偏振子冷凝物的初步测量。这些新技术启用了尚未探索的尚未探索的方法来创建Exciton-Polartons的拓扑状态，例如。通过快速旋转或通过摇动的光学晶格。