Urquijo-Rodríguez Andrés F, Gómez Edgar A, A Rodríguez Boris, Vinck-Posada Herbert
Grupo de Superconductividad y Nanotecnología, Departamento de Física, Universidad Nacional de Colombia, 111321 Bogotá, Colombia.
Grupo de Investigación en Física Teórica y Computacional, Programa de Física, Universidad del Quindío, 630004 Armenia, Colombia.
J Phys Condens Matter. 2024 Sep 24;36(50). doi: 10.1088/1361-648X/ad7ac3.
In this work, a quantum dissipative model is employed to investigate the influence of a perpendicular magnetic field on the photoluminescence (PL) spectrum of a quantum well embedded within a microcavity. This model incorporates both the exact electron-hole interaction within the semiconductor and the light-matter coupling between the fundamental photonic mode and the fermionic particles. The loss and pumping mechanisms are described using the quantum master equation, and the PL spectrum is determined via the quantum regression theorem. Our findings demonstrate that the magnetic field acts as a control mechanism in the polariton emission energy, the emission linewidth and the intensity distribution along the emission line. Finally, it is observed that the magnetic field can redistribute the density matrix occupations leading to modifications in the average number of polaritons in the system.
在这项工作中，采用量子耗散模型来研究垂直磁场对嵌入微腔中的量子阱光致发光（PL）光谱的影响。该模型既包含了半导体内部精确的电子 - 空穴相互作用，又包含了基本光子模式与费米子粒子之间的光 - 物质耦合。使用量子主方程描述损耗和泵浦机制，并通过量子回归定理确定PL光谱。我们的研究结果表明，磁场在极化激元发射能量、发射线宽以及沿发射线的强度分布方面起到控制机制的作用。最后，观察到磁场可以重新分布密度矩阵占据情况，从而导致系统中极化激元平均数量的改变。
