微波光子的检测和表征对于量子信息具有重要意义。通常使用Hanbury Brown?Twiss (HBT) 干涉仪对光子源性质进行检测和表征, 然而, 由于微波光子信噪比较低, 在对其进行检测和表征过程中常常需要多次计算才能移除噪声影响。本工作基于现场可编程门阵列（FPGA）, 提出一种快速、可扩展的测量方案用于分析微波光子源性质, 可更快速地实现该计算过程。利用该方案对频率为3 MHz的相干源进行了模拟测量, 分析了二阶相关函数所具有的特性, 发现测量结果与理论具有良好的一致性。该系统的实现对未来进行单光子源检测具有重要意义。

随着有机电致发光显示（OLED）技术的不断发展，OLED在智能手机、智能手表和电视等市场应用不断扩大。尤其是在小尺寸智能手机市场，OLED已成为主流的显示技术，并有望逐步替代LCD技术。但在中大尺寸显示产品如平板电脑、笔记本、显示器、电视等应用领域，受限于目前真空蒸镀工艺的高成本及可靠性问题，发展较为缓慢，但市场对其需求依然很高。相比于真空蒸镀技术，通过喷墨印刷技术制备显示器件，可极大地提高材料利用率，降低设备成本，且由于其是一种增材制造方式，可减少资源消耗和环境污染，更有利于实现大面积、轻、薄、柔的显示屏制造。本文介绍了用于喷墨印刷OLED的各功能层材料研究进展，并对印刷OLED器件结构、制备工艺及器件性能进行了讨论，最后对印刷OLED的发展前景进行了展望。

The origin of terahertz (THz) generation in a gas-phase medium is still in controversy, although the THz sources have been applied across many disciplines. Herein, the THz generation in a dual-color field is investigated experimentally by precisely controlling the relative phase and polarization of dual-color lasers, where the accompanying third-harmonic generation is employed for in situ determination of the relative phase up to sub-wavelength accuracy. Joint studies with the strong approximation (SFA) theory reveal that the continuum-continuum (CC) transition within an escaped electron wave packet in the single atom gives birth to THz emission, without the necessity of considering the plasma effect. Meanwhile, we develop the analytic form from SFA-based CC description, which is able to reproduce and decompose the classical photocurrent model from the viewpoint of microscopic quantum theory, establishing the quantum-classical correspondence and bringing a novel insight into the mechanism of THz generation. Present studies leave open the possibility for probing the ultrafast dynamics of continuum electrons and a new dimension for the study of THz-related science and methodology.