论文标题
在强烈非排定参数下转换的方位角本本
Azimuthal eigenmodes at strongly non-degenerate parametric down-conversion
论文作者
论文摘要
基于参数光下转换的量子光学技术尚未在Terahertz频率范围内应用。这是由于在Terahertz频率范围内检测单个光子的复杂性以及光学 - terahertz Biphotons模式的强纠缠。这项研究研究了当惰轮辐射的频率不超过几个Terahertz时，由强非分类参数下转换产生的散射辐射的角结构。我们证明，在某些近似值下，有可能为非线性交流运算符获得方位角本本特征。这些本本特定中现场运算符的进化方程的解具有Bogolyubov转换的形式，该形式允许获得参数增益的任意值的散射矩阵。该散射矩阵既描述了双音对的产生，又描述了相关光学 - terahertz场的强烈通量产生，它们在两个光谱范围内形成了宏观量子辐射状态。
Quantum-optical technologies based on parametric light down-conversion are not yet applied in the terahertz frequency range. This is owing to the complexity of detecting single photons in the terahertz frequency range and the strong entanglement of modes of optical-terahertz biphotons. This study investigates the angular structure of scattered radiation generated by strongly non-degenerate parametric down-conversion when the frequency of the idler radiation does not exceed several terahertz. We demonstrate that under certain approximations, it is possible to obtain azimuthal eigenmodes for the nonlinear-interaction operator. The solution of the evolution equations for the field operators in these eigenmodes has the form of the Bogolyubov transformation, which allows a scattering matrix to be obtained for arbitrary values of the parametric gain. This scattering matrix describes both the production of biphoton pairs and the generation of intense fluxes of correlated optical-terahertz fields that form a macroscopic quantum state of radiation in two spectral ranges.
