标题： 光频梳中克尔参量振荡器的跨跃干扰 显示英文标题

标题： Inter-transition interference in spectrum of Kerr parametric oscillators

摘要： 我们理论研究了双光子和四光子Kerr参量振荡器（KPOs）的反射和透射测量，引入了能级间跃迁之间的干涉效应。 由于KPO的能级简并，探测场可以与多个能级间跃迁共振。 我们通过引入能级间跃迁与密度矩阵的非对角元素之间的相互作用，扩展了之前的反射测量理论，这些非对角元素之前被忽略了。 我们证明这些跃迁之间的干涉显著改变了光谱。 我们确定了干涉的条件，以及密度矩阵的非对角元素影响光谱的条件。 该理论也推广到了透射测量，并适用于超越KPOs的广泛系统类别。 显示英文摘要

摘要： We theoretically investigate reflection and transmission measurements of two-photon and four-photon Kerr parametric oscillators (KPOs), introducing interference effects between inter-level transitions. Due to the level degeneracy of a KPO, a probe field can be resonant with multiple inter-level transitions. We extend the previous theory of reflection measurements by incorporating the interaction between inter-level transitions and off-diagonal elements of the density matrix which had previously been neglected. We demonstrate that interference among these transitions substantially modifies the spectrum. We identify the conditions for the interference, as well as those under which the off-diagonal elements of the density matrix affect the spectrum. The theory is also generalized to transmission measurements, and is applicable to a broad class of systems beyond KPOs.