论文标题
伪2在光子手性硼苯中
Pseudospin-2 in photonic chiral borophene
论文作者
论文摘要
伪旋转是在有效的无质量dirac样方程中的真实电子自旋引入的角度动量的自由度，用于描述锥形相交（例如石墨烯的狄拉克锥）在锥形相交处的波化。在这里，我们研究了唯一的唯一唯一唯一的同句的光子实现，该手性唯一的同素异形体在其能量弹药光谱中占据了伪2个圆锥形的相交。这种五倍的光谱退化的存在引起了准伪粒子，伪spin高达$ \ pm2 $。我们报告了光子手性硼苯中光的锥形衍射和伪轨道相互作用，这是由于拓扑电荷转化的结果，导致产生高电荷的光相位涡流。
Pseudospin is an angular momentum degree of freedom introduced in analogy to the real electron spin in the effective massless Dirac-like equation used to describe wave evolution at conical intersections such as the Dirac cones of graphene. Here, we study a photonic implementation of a chiral borophene allotrope hosting a pseudospin-2 conical intersection in its energy-momentum spectrum. The presence of this fivefold spectral degeneracy gives rise to quasiparticles with pseudospin up to $\pm2$. We report on conical diffraction and pseudospin-orbit interaction of light in photonic chiral borophene, which, as a result of topological charge conversion, leads to the generation of highly charged optical phase vortices.
