论文标题
激发的原子与Chern绝缘子相互作用：朝向远场谐振的Casimir-Polder排斥
An excited atom interacting with a Chern insulator: towards a far-field resonant Casimir-Polder repulsion
论文作者
论文摘要
我们考虑激发碱性原子的共鸣casimir-polder相互作用，该原子具有单个（电偶极子）与Chern绝缘子的过渡。 Chern绝缘子具有非零的时间逆向对称性破坏大厅电导，从而为共振的Casimir-Polder相互作用做出了额外的贡献，该相互作用取决于霍尔电导率和原子过渡的圆形极化状态之间的耦合。我们发现，对于与Chern绝缘子的Van Hove奇点相关的值，可以显着增强Casimir-Polder-polder偏移。此外，我们发现，如果原子偶极转变是正确的循环极化，而Chern绝缘子的Chern数量为$ -1 $，则可以在相对较大的原子表面距离内单调衰减和排斥力，而chern dipole Tresmition the Atomic Dipole Trancortion the Atomic Dollyally Polarly Polarlical Polarly Is $ 1 $ 1 $ 1 $ 1 $ 1 $ 1 $ 1.
We consider the resonant Casimir-Polder interaction of an excited alkali-type atom which has a single (electric dipole) transition with a Chern insulator. The Chern insulator has a nonzero, time reversal symmetry breaking Hall conductance, leading to an additional contribution to the resonant Casimir-Polder interaction which depends on the coupling between the Hall conductance and the circular polarization state of the atomic transition. We find that the resonant Casimir-Polder shift can be significantly enhanced for de-excitation frequencies near values associated with the van Hove singularities of the Chern insulator. Furthermore, we find that the resonant Casimir-Polder force can become monotonically decaying and repulsive for a relatively large atom-surface distance, if the atomic dipole transition is right circularly polarized and the Chern number of the Chern insulator is $-1$ or the atomic dipole transition is left circularly polarized and the Chern number is $1$.
