论文标题
控制光子手性的自发对称破坏与可重构异常非线性
Control spontaneous symmetry breaking of photonic chirality with reconfigurable anomalous nonlinearity
论文作者
论文摘要
非线性系统中的自发对称性破坏提供了一种统一的方法，可以理解截然不同的现象，从希格斯机制[1]和超导性[2]到生态稳定性[3]和基因组产生[4]。自发对称性断裂通常被认为是具有固定出现条件和特性的非线性系统的内在特性，因为无法修改非线性相互作用的形式和幅度[5]。在这里，我们报告了可重构Kerr光学非线性的发展，以控制自发对称性破坏。这是通过内在的Kerr和级联二阶非线性过程之间的干扰来实现的[6]。已经证明了异常的KERR效应，包括负性自相度调制和竞争非线性过程之间的强度调整。通过可重新配置的Kerr非线性，我们意识到光子性手性的自发对称性破坏的原位禁止和促进。这项工作可以赋予对未开发的策略中自发对称性破坏的实验研究，并激发新的光子功能的发展。
Spontaneous symmetry breaking in nonlinear systems provides a unified method to understand vastly different phenomena, ranging from Higgs mechanism [1] and superconductivity [2] to ecological stability [3] and genome generation [4]. Spontaneous symmetry breaking is typically considered as the intrinsic property of nonlinear systems with fixed occurrence condition and property, as the form and magnitude of nonlinear interactions cannot be modified [5]. Here, we report the development of reconfigurable Kerr optical nonlinearity to control spontaneous symmetry breaking. This is achieved through the interference between the intrinsic Kerr and cascaded second-order nonlinear processes [6]. Anomalous Kerr effects including negative self-phase modulation and strength tuning between competing nonlinear processes have been demonstrated. With the reconfigurable Kerr nonlinearity, we realize the in-situ prohibition and facilitation of spontaneous symmetry breaking of photonic chirality. This work could empower the experimental study of spontaneous symmetry breaking in unexplored regimes and inspire the development of novel photonic functions.
