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奇偶性提升的辐射简并性:非手性介质腔中正交偶极子与平行偶极子的比较

Parity-Lifted Radiative Degeneracy: Orthogonal Dipoles over Parallel Dipoles in Achiral Dielectric Cavities

Zhong-Jian Yang, Ya-Pei Wang, Lin Ma, Jian-Hua Liang, Yue You, Jun He

arXiv 2607.13603首次发表:更新:

AI 中文总结

研究在非手性介质腔中通过耦合诱导全局宇称破缺提升辐射简并性,利用该机制实现微分衰变,呈现独特结构 - 功能趋势,经半解析模型验证,为无固有手性的对称性工程建立新范式。

AI 中文摘要

在自由空间中,宇称对称性导致宇称共轭发射器的辐射简并。我们通过耦合诱导的全局宇称破缺,在非手性介质腔中选择性地消除这种简并:腔和单个偶极子各自保持宇称,但其固定的相对取向打破全局宇称,实现微分衰变。这种机制呈现出与罗森菲尔德规则形成鲜明对比的结构 - 功能趋势。一个经过多种模式验证的半解析模型证实了其普遍性。这些发现为无固有手性的对称性工程建立了新范式。

英文摘要

Parity symmetry enforces radiative degeneracy of parity-conjugated emitters in free space. We selectively lift this degeneracy in an achiral dielectric cavity via coupling-induced global parity breaking: the cavity and individual dipoles each preserve parity, while their fixed relative orientation breaks global parity, enabling differential decay. This mechanism exhibits a structure-function trend in marked contrast to the Rosenfeld rule: orthogonal electric-magnetic dipoles yield radiative asymmetry approaching the theoretical limit of 2, whereas parallel ones show negligible differentiation. A semi-analytical model, validated across multiple modes, confirms generality. These findings establish a new paradigm for symmetry engineering without intrinsic chirality.

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