论文标题
旋转轨道对陷阱中极化状态的影响
Spin-orbital effect on polariton state in traps
论文作者
论文摘要
我讨论了量子孔中电子对电子耦合的旋转轨道效应的差异和差异，并在半导体微腔内进行TE-TM分裂。与电子的情况相反，陷阱中北极星的基态可能是非分化的，并且可以具有特定的极化结构。对于方位角对称陷阱和足够强的自旋轨道耦合的情况，基态是径向或方位角涡流，具体取决于耦合常数的符号。对于被困在环中的极性子而言，这种效果得到了强烈的增强，即使TE-TM分裂也会导致形成涡度和基态的确定极化。衍生在环中极化子的准1D运动的哈密顿量被得出，并显示了极化子的分散在定性上取决于环的曲率。
I discuss similitude and differences of spin-orbital effects for electrons in quantum wells with the Rashba coupling and for polaritons in semiconductor microcavities with TE-TM splitting. Contrary to the case of electron, the ground state of polariton in the trap can be non-degenerate and can possess specific polarization structure. For the case of azimuthally symmetric trap and sufficiently strong spin-orbital coupling, the ground state is either radial or azimuthal vortex, depending on the sign of the coupling constant. The effect is strongly enhanced for polaritons trapped in a ring, where even weak TE-TM splitting results in formation of vorticity and definite polarization of the ground state. The Hamiltonian for quasi-1D motion of polaritons in the ring is derived and it is shown the the dispersion of polaritons depend qualitatively on the curvature of the ring.
