Tailored KTP and LiNbO3 waveguide structures for counter-propagating parametric down-conversion processes (B05)

本计画的目的在制作具有超短周期的周期性极化光波导结构，以实现反向传播的参数下转换。我们将专注于所需的技术过程的发展，以实现超短畴周期的技术和分析方法相结合，与理论材料物理学密切合作。实现的结构将被调查的适用性在真实的PDC源在其非线性光学性质。实现反向传播参量下转换将使明亮的和窄带的单光子源所必需的新的量子光学实验。

This project aims at the fabrication of periodically poled waveguide structures with ultrashort periods in lithium niobate and KTP for counter-propagating parametric down conversion. We will focus on the development of the technological processes required to achieve ultra short domain periods in a combined technological and analytical approach in close cooperation with theoretical materials physics. The realized structures will be investigated for the applicability in real PDC sources in terms of their nonlinear optical properties. Achieving counter-propagating parametric down conversion will enable bright and narrowband single photon sources necessary for novel quantum optical experiments.