论文标题
周期性发射器的周期性链中的透明度强烈耦合到波导
Transparency in a periodic chain of quantum emitters strongly coupled to a waveguide
论文作者
论文摘要
我们证明了一系列定期间隔的非相同量子发射器与波导耦合的透明行为的出现，在特殊情况下，原子间分离是谐振波长的半综合倍数，即$ kl $，即$ $ $ y $ k $，$ k $是$ k $ as Spatial spat pactitial spat pactial spat pactial。当相等但相反的频率引导成对分配给一个偶数原子系统时，随之而来的是完美的传输。当链大小奇怪时，类似的分配会导致集体效应的消失，因为奇数决定了光谱行为。我们还表现出这些特征对耗散效应的鲁棒性并显示了与衰减速率相比，光谱行为如何显着地在原子之间的相对失谐上。与电磁诱导的透明度（EIT）现象的关键区别在于，在波导情况下，原子之间的固有波导介导相耦合的存在强烈影响传输特性。此外，虽然单光子传输中的互惠通常由于相位耦合而无法保持，但我们观察到一个有趣的例外，对于$ kl =nπ$，波导在传输和反射系数方面都表现出相互的行为。
We demonstrate the emergence of transparent behavior in a chain of periodically spaced non-identical quantums emitters coupled to a waveguide, in the special case when the inter-atomic separation is a half-integral multiple of the resonant wavelength, i.e. $kL$ is an integral multiple of $π$, with $k$ being the spatial frequency and $L$ the spatial periodicity. When equal but opposite frequency detunings are assigned in pairs to a system of even number of atoms, perfect transmission ensues. When the chain size is odd, a similar assignment leads to the disappearance of collective effects as the odd atom determines the spectral behavior. We also manifest the robustness of these features against dissipative effects and show, how the spectral behavior hinges significantly on the relative detunings between the atoms as compared to the decay rate. A key distinction from the phenomenon of Electromagnetically Induced Transparency (EIT) is that in the waveguide case, the presence of an intrinsic waveguide mediated phase coupling between the atoms strongly affects the transport properties. Furthermore, while reciprocity in single-photon transport does not generally hold due to the phase coupling, we observe an interesting exception for $kL = nπ$ at which the waveguide demonstrates reciprocal behavior with regard to both the transmission and reflection coefficients.
