Light scattering from stationary $\mathcal{PT}$-symmetric collections of particles

Hanbury Brown-Twiss effect with electromagnetic scattered field generated by a collection of particles of $\mathcal{L}$ types

A theoretical framework in the spherical polar coordinate system is developed to systematically treat the correlation between intensity fluctuations (CIF) of electromagnetic light waves on scattering from a collection of particles of $\mathcal{L}$ types. Two $\mathcal{L}\times \mathcal{L}$ matrices called pair-potential matrix (PPM) and pair-structure matrix (PSM) are introduced to jointly formulate the normalized CIF of the scattered field for the first time. We build a closed-form relation that associates the normalized CIF with the PPM and the PSM as well as the spectral degree of polarizat…

Scattering theory for stationary materials with $\mathcal{PT}$ symmetry

A theoretical framework is developed for scattering of scalar radiation from stationary, three-dimensional media with correlation functions of scattering potentials obeying $\mathcal{PT}$-symmetry. It is illustrated that unlike in scattering from deterministic $\mathcal{PT}$-symmetric media, its stationary generalization involves two mechanisms leading to symmetry breaking in the statistics of scattered radiation, one stemming from the complex-valued medium realizations and the other - from the complex-valued degree of medium's correlation.

来自含$\u0007$种粒子的集合体的光波散射

Scattering of light waves from a collection with particles of $\mathcal{L}$ types

本研究在一阶玻恩近似下提出含多类粒子光散射的新方法，引入对势矩阵和对结构矩阵推导散射场交叉谱密度的闭式关系，分析光谱相干度特性，并通过实例验证方法的重要性。

电磁波的基本转移矩阵、平面点散射体阵列的散射与反PT对称性

Fundamental transfer matrix for electromagnetic waves, scattering by a planar collection of point scatterers, and anti-PT-symmetry

本文提出一种适用于一般线性介质的电磁波散射基本转移矩阵公式，并利用该公式精确求解了平面点散射体阵列的散射问题，揭示了反PT对称双联体具有连续激光光谱的特性。

吸收介电背景对二能级原子密集集合双稳态响应的影响

Influence of absorbing dielectric background on bistable response of dense collection of two-level atoms

半经典地处理了光与介质中密集二能级原子相互作用的定态问题。利用复局域场增强因子讨论了介质吸收对本征光学双稳现象的影响。计算会计传播效应（非本地政权）表明，即使是低介电吸收的结果在消除响应不稳定性。

周期性 $\mathcal{PT}$ 对称散射系统的尺寸相关动力学不稳定性

Size-dependent dynamical instability of periodic $\mathcal{PT}$-symmetric scattering systems

研究周期性 $\mathcal{PT}$ 对称链的动力学不稳定性，通过 $S$ 矩阵分析导出阈值 $\gamma_c = 2\sin[\pi/(4N)]$，发现增大系统尺寸会降低稳定性阈值，导致许多经典现象落入不稳定区域。