论文标题
拓扑波导QED中的空缺状态
Vacancy-like dressed states in topological waveguide QED
论文作者
论文摘要
我们确定一类着装的原子 - 光子状态在任何耦合强度下形成相同的原子能量。作为标志，他们的光子组件是裸光子浴的本征态，其空缺代替原子。图片可容纳波导Q的现象，其中原子作为完美的镜子，在连续体中的特定打扮结合状态（BS）或与几何限制的光子模式相连。当应用于光子晶格时，该框架提供了一个通用标准，可以通过将其与光子BS一对一的对应关系置于具有拓扑特性的晶格中的BS。因此，在光子克鲁兹 - 河畔和haldane模型中预测了新的衣服BS。在后一种情况下，发生非零局部光子通量的状态，在该状态下，原子在其周围的光子上打扮。
We identify a class of dressed atom-photon states formingat the same energy of the atom at any coupling strength. As a hallmark, their photonic component is an eigenstate of the bare photonic bath with a vacancy in place of the atom. The picture accommodates waveguide-QED phenomena where atoms behave as perfect mirrors, connecting in particular dressed bound states (BS) in the continuum or BIC with geometrically-confined photonic modes. When applied to photonic lattices, the framework provides a general criterion to predict dressed BS in lattices with topological properties by putting them in one-to-one correspondence with photonic BS. New classes of dressed BS are thus predicted in the photonic Creutz-ladder and Haldane models. In the latter case, states with non-zero local photon flux occur, where an atom is dressed by a photon orbiting around it.
