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arXiv 1902.02887physics.opticscond-mat.mes-hall
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布洛赫波调制光子晶体中光的反常量子霍尔效应

Anomalous quantum Hall effect of light in Bloch-wave modulated photonic crystals

Kejie Fang, Yunkai Wang

摘要:

有效的磁场已经能够对包括光子在内的中性粒子进行前所未有的操纵。在大多数研究的情况下,有效规范场是通过空间离散元件之间的模式耦合的相位来定义的,例如在光子的情况下的光学谐振器和波导。在这里,在布洛赫波调制的光子晶体的范例中,我们首次展示了通过Floquet能带工程在传统电介质连续体中为光子创建有效的磁场。通过控制布洛赫波的相位和波矢,我们证明了由于离域波干涉而具有明显拓扑能带特征的光的反常量子霍尔效应。基于无腔结构,利用光子晶体中的导共振可以增强布洛赫波调制,该研究为实现大尺度有效磁场的光束控制和时间反转对称性破缺的拓扑光物质相位打开了大门.

英文摘要:

Effective magnetic fields have enabled unprecedented manipulation of neutral particles including photons. In most studied cases, the effective gauge fields are defined through the phase of mode coupling between spatially discrete elements, such as optical resonators and waveguides in the case for photons. Here, in the paradigm of Bloch-wave modulated photonic crystals, we show creation of effective magnetic fields for photons in conventional dielectric continua for the first time, via Floquet band engineering. By controlling the phase and wavevector of Bloch waves, we demonstrated anomalous quantum Hall effect for light with distinct topological band features due to delocalized wave interference. Based on a cavity-free architecture, in which Bloch-wave modulations can be enhanced using guided-resonances in photonic crystals, the study here opens the door to the realization of effective magnetic fields at large scales for optical beam steering and topological light-matter phases with broken time-reversal symmetry.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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