非对称非线性器件中通过量子干涉实现输运互易性的复兴
Revival of transport reciprocity via quantum interference in asymmetric nonlinear devices
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中文总结 AI 辅助
该研究针对非对称非线性器件的非互易光输运问题，通过人工原子耦合波导的双光子散射模型，利用量子干涉效应实现输运互易性的调控与复兴。
中文摘要 AI 辅助
结构非对称性结合光学非线性常导致非互易光输运，本文探究单光子干涉效应在这类非线性模型中复兴互易性的机制。为此研究关联双光子散射：人工原子以两种方式耦合到无限波导，一是非对称地在两个空间分离点侧耦合，二是直接耦合到两个半无限波导。设置（a）对双光子呈现稳健的互易输运；设置（b）可通过调节两波导间额外光子隧穿路径的干涉效应，实现从非互易区到互易区的转变。
英文摘要
Structural asymmetry combined with optical nonlinearity often leads to nonreciprocal light transport. We explore the mechanism by which 1-photon interference effects can revive reciprocity in such nonlinear models. To this end, we study correlated 2-photon scattering where an artificial atom is asymmetrically (a) side-coupled to an infinite waveguide at two spatially separated points, and (b) direct-coupled to two semi-infinite waveguides. The setup (a) gives robust reciprocal transport for the two photons. However, the setup (b) shows a transition from a nonreciprocal to a reciprocal regime by tuning the interference effect via an additional tunneling path for photons between the two waveguides.
