论文标题
在Fano-sonconance波导几何形状中的几个光子传输
Few-photon Transport in Fano-resonance waveguide geometries
论文作者
论文摘要
我们提出了一项关于少数光子传输中FANO干扰效应的理论研究。在适当的条件下，光学波导中的局部缺陷诱导了高度不对称的传输线形，这是FANO干扰的特征。对于与此类缺陷相邻的两级发射极，此处以部分传输元件为模型，我们找到了单光子波袋的全日制演化的分析表达式和发射机激发概率。我们展示了部分传输元件如何影响发射极寿命并改变有效系统共振的光谱位置。使用输入输出形式主义，我们确定了两级发射极和腔发射机系统的单个和两光子$ s $ matrices，并与具有部分传输元件的波导相连。我们展示了如何用可调线性或非线性束分配器的类比来实现hong-ou-mandel开关的FANO干扰效果。
We present a theoretical study of Fano interference effects in few-photon transport. Under appropriate conditions, a local defect in an optical waveguide induces a highly asymmetric transmission lineshape, characteristic of Fano interference. For a two-level emitter placed adjacent to such a defect, here modeled as a partially transmitting element, we find an analytical expression for the full time evolution of single-photon wavepackets and the emitter excitation probability. We show how the partially transmitting element affects the emitter lifetime and shifts the spectral position of the effective system resonances. Using input-output formalism, we determine the single and two-photon $ S $-matrices for both a two-level emitter and a cavity-emitter system coupled to a waveguide with a partially transmitting element. We show how the Fano interference effect can be exploited for the implementation of a Hong-Ou-Mandel switch in analogy with a tunable linear or nonlinear beam splitter.
