论文标题
石墨烯中的量子光磁学
Quantum Optomagnetics in Graphene
论文作者
论文摘要
石墨烯可以通过其轨道角动量对强烈极化光的非线性响应进行磁化。这种光磁效应可以通过反向法拉第效应（IFE）很好地体现，其中光学生成的DC磁化会导致石墨烯的光学活性。我们通过在存在圆形极化单色光的情况下，在越野点附近的重新归一化的汉密尔顿，在存在重新归一化的哈密顿量的存在下，通过求解石墨烯中的IFE的单粒子量子机械模型。我们基于准电子的非扰动和穿着的状态来得出DC磁化的分析表达，其中它们的能量光谱被圆形极化光覆盖。然后，通过陀螺双折射计算光旋转功率，在中等和强烈的光辐射下，可测量的极化旋转角度进行计算。
Graphene can be magnetized through nonlinear response of its orbital angular momentum to an intense circularly polarized light. This optomagnetic effect can be well exemplified by the Inverse Faraday Effect (IFE) where an optically-generated DC magnetization leads to graphene's optical activity. We provide a single-particle quantum mechanical model of an IFE in graphene by solving Schrödinger's equation in the presence of a renormalized Hamiltonian near a Dirac point in the presence of circularly polarized monochromatic light. We derive an analytical expression for DC magnetization based on non-perturbative and dressed states of quasi-electrons where their energy spectrum is isotropically gapped by the circularly polarized light. Optical rotatory power is then computed through the gyroelectric birefringence where a measurable polarization rotation angle under moderate and intense optical radiations is predicted.
