发表机构
Instituto Federal de Mato Grosso; Departamento de Física, Universidade Federal de Santa Catarina; Universidad de Concepción; Millennium Institute for Research in Optics, Universidad de Concepción（马托格罗索联邦学院; 圣卡塔琳娜联邦大学物理系; 孔塞普西翁大学; 孔塞普西翁大学光学研究千年研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本综述揭示受激参量下转换中闲频光与泵浦场和种子复共轭的点积关系，统一解释图像转移、相位共轭、轨道角动量守恒及矢量涡旋光束处理，并探讨其作为工具及量子区域应用。
AI 中文摘要
受激参量下转换（StimPDC）是支撑光子量子信息领域核心过程的有种子版本。将一个输入端口处的真空替换为相干种子，不会改变相互作用哈密顿量、相位匹配函数和双光子振幅，同时将输出提升到普通经典探测器可及的水平。本综述探讨该过程的横向空间物理。我们表明，一个单一关系——其中闲频光振幅是泵浦场与种子复共轭的点积——能够统一组织通常被分别呈现的结果：1990年代的图像与相干性转移实验；相位共轭及其在波前校正中的应用；轨道角动量的守恒与共轭，以及径向模式和几何强度图案的产生；还有携带空间变化偏振的矢量涡旋光束的处理。随后，我们将StimPDC视为一种工具而非研究对象，涵盖受激发射断层成像、Klyshko超前波图像的实验实现，以及部分相干性的转移，包括扭曲高斯谢尔模型光束的扭曲相位守恒。最后，我们讨论量子区域——当种子接近单光子水平或闲频光用作 heralding 时——并评估开放问题和潜在应用。
英文摘要
Stimulated parametric down-conversion (StimPDC) is the seeded version of the process that underlies much of photonic quantum information. Replacing the vacuum at one input port with a coherent seed leaves the interaction Hamiltonian, the phase-matching function and the two-photon amplitude unchanged, while raising the output to levels accessible with ordinary classical detectors. This review treats the transverse spatial physics of that process. We show that a single relation, in which the idler amplitude is the pointwise product of the pump field with the complex conjugate of the seed, organizes results usually presented separately: the image and coherence transfer experiments of the 1990s; phase conjugation and its use for wavefront correction; the conservation and conjugation of orbital angular momentum, together with the generation of radial modes and geometric intensity patterns; and the processing of vector vortex beams carrying spatially varying polarization. We then consider StimPDC as an instrument rather than as an object of study, covering stimulated emission tomography, the experimental realization of Klyshko's advanced-wave picture, and the transfer of partial coherence, including the conservation of the twist phase of twisted Gaussian Schell-model beams. We close with the quantum regime, reached when the seed approaches the single-photon level or the idler is used as a herald, and with an assessment of open problems and prospective applications.
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