We theoretically study the collective single excitation dynamics in a chiral-coupled atomic chain with nonreciprocal decay channels. The collective radiation in this one-dimensional (1D) nanophotonics system results from the resonant dipole–dipole interactions in 1D reservoirs, which allow infinite-range couplings between atoms. When a single photon interacts with part of the atomic chain from a side excitation, the long-time decay can be further prolonged when highly correlated states are initially excited. The excitation plateau in the decay process can emerge due to the ordered population exchanges, which presents one distinctive signature of long-range and light-induced atom–atom correlations. Multiple time scales of the decay behaviors also show up due to multiple scattering of light transmissions and reflections in the chain. We further investigate the effect of atomic position fluctuations and find that the cascaded scheme with a unidirectional coupling is more resilient ...

中文翻译：

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手性耦合原子链中的集体单激发动力学

我们从理论上研究具有不可逆衰减通道的手性耦合原子链中的集体单激发动力学。一维（1D）纳米光子系统中的集体辐射是由一维储层中的共振偶极-偶极相互作用产生的，该相互作用允许原子之间进行无限范围的耦合。当单个光子通过侧面激发与原子链的一部分相互作用时，当最初激发高度相关的状态时，长时间衰减会进一步延长。衰变过程中的激发平台可能由于有序的种群交换而出现，这代表了远距离和光诱导的原子-原子相关性的一个独特特征。衰减行为的多个时间尺度也由于光传输和反射链中的多次散射而出现。