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在光子网格中的二维晶体基础上拓调节的极子子

L Lackner¹, O A Egorov², A Ernzerhof¹

¹Carl von Ossietzky Universität Oldenburg, Institut für Physik, Fakultät V, 26129 Oldenburg, Germany.

Physical review letters

|October 31, 2025

概括

研究人员使用WS2单层在开放的光学腔中展示了可调节的拓格子. 这一突破允许在现场控制拓模式,为先进的光子设备铺平了道路.

科学领域:

凝聚物质物理学凝聚物质物理学
量子光学是一种量子光学.
材料科学材料科学材料科学

背景情况:

结构化的光学腔对于研究格子哈密尔顿和拓现象至关重要.
在单立体腔中对立体模式的现场调整在实验上具有挑战性.

研究的目的:

在可调节的开放光学腔中模拟Su-Schrieffer-Heeger (SSH) 格子哈密尔顿.
调查拓模式及其属性的现场调整性.
探索SSH格子转变为斯塔克梯子的过程.

主要方法:

在可调节的开放光学腔中模拟SSH格子哈密尔顿.
在一个集成的WS2单层中,腔与激子的强合.
利用倾斜调能力将SSH网格转换为一个斯塔克梯子.

主要成果:

在域边界上观察一个拓保护的,指数局部化的模式.
拓模式的光谱调制能力超过80 meV.
直接量化扎克相差 (1.07±0.11) π. 的量化.
将SSH网格转化为斯特克梯子,合缺陷和传播模式.

结论:

这项工作在拓格的现场调整方面取得了重大进展.
开发的平台可以在非线性光子系统中精确控制和引导光.
为芯片上对光的拓状态进行操作开辟了新的途径.

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