对光子运动边缘阶段的观测
Yi-Jun Chang1,2, Jia-Hui Zhang3,4, Yong-Heng Lu1,2
1Shanghai Jiao Tong University, Center for Integrated Quantum Information Technologies (IQIT), School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai 200240, China.
Physical review letters
|February 21, 2025
概括
研究人员观察到光子网中独特的能源依赖的安德森局部化. 中间能量状态变得扩展,而低/高能量状态仍然局部化,揭示了移动性边缘阶段.
科学领域:
- 量子物理学的量子物理学
- 凝聚物质物理学 凝聚物质物理学
- 光子学 是一个光子学.
背景情况:
- 安德森局部化描述了在无序系统中抑制波函数传播的情况.
- 理论模型预测了从局部到扩展状态的过渡,随着混乱或能量的增加.
- 以前的研究主要集中在较低的维度和均的混乱.
研究的目的:
- 在准周期光子波导网格中实验研究能源依赖的安德森定位.
- 为了证明移动边缘阶段的出现,不同的能量状态表现出不同的本地化行为.
- 探索光子系统在研究不平衡量子力学方面的潜力.
主要方法:
- 一个马赛克准周期光子波导网格的制造.
- 实施一个电过程,以准备特定的光子固有模式 (零,中间和极端能量).
- 测量已准备的自身模式的局部化特性,并调查不平衡火动态.
主要成果:
- 对一个独特的局部化场景的实验观测:中等能量固有模式变得扩展,而低能和高能固有模式仍然局部化.
- 展示能源依赖的安德森定位过渡和移动边缘阶段的形成.
- 已经证明光子洛施密特回声能够识别出移动性边缘阶段的存在.
结论:
- 该研究通过实验验证了安德森定位在较低维度中的新型形式,偏离了标准预测.
- 这些发现突出了准周期性在创造能源依赖的局部化现象和移动边缘方面的作用.
- 这项工作为探索复杂的量子现象提供了一个平台,包括不平衡物理,使用光子系统.
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