论文标题
通过多模非线腔的少量传输：理论和应用
Few-photon transport via a multimode nonlinear cavity: theory and applications
论文作者
论文摘要
通过波导耦合的局部量子系统进行的很少的传输吸引了广泛的理论和实验研究。大多数研究都集中在原子或原子样的局部量子系统上，因为它们的强光相互作用对量子应用有用。在这里，我们通过具有二阶散装非线性的波导耦合多模光腔研究了很少的光子传输。我们开发了Feynman图方法，并计算单光子传输和两光子传输的散射矩阵。基于计算出的散射矩阵，我们可以通过量子干扰和线性响应工程来实现高度非分类光子效应，包括光子阻滞和条件相移，在波导耦合的多模光腔系统中可以实现。我们的结果可能导致量子光电电路在全光量子信息处理和量子网络协议中的重要应用。
Few-photon transport via waveguide-coupled local quantum systems has attracted extensive theoretical and experimental studies. Most of the study has focused on atomic or atomic-like local quantum systems due to their strong light-matter interaction useful for quantum applications. Here, we study few-photon transport via a waveguide-coupled multimode optical cavity with second-order bulk nonlinearity. We develop a Feynman diagram approach and compute the scattering matrix of the one- and two-photon transport. Based on the calculated scattering matrix, we show highly nonclassical photonic effects, including photon blockade and $π-$conditional phase shift, are achievable in the waveguide-coupled multimode optical cavity system via quantum interference and linear response engineering. Our results might lead to significant applications of quantum photonic circuits in all-optical quantum information processing and quantum network protocols.
