基于量子阱半导体光放大器（QWSOA）独特的偏振效应，致力于发展面向量子相干调控的超快高相干性光脉冲系统，并应用于量子点调控，探索新现象，获得高质量单光子源。主要研究：(1)揭示QWSOA超快偏振旋转的微观机理，建立QWSOA包含偏振效应的脉冲传输模型，阐明基于QWSOA偏振效应的全光微分与脉冲锁模机制；(2)研究光脉冲的微分过程及电光调制器的反馈补偿，获得高重频、高相干性、大可调的亚皮秒双脉冲（孪生脉冲）；(3)探索QWSOA偏振效应的脉冲锁模机制，产生稳定的飞秒光采样脉冲；建立GaAsP材料多光子吸收数学模型，研究基于双光子吸收的光采样脉冲波形测量方法，实现对低功率亚皮秒脉冲波形的测量与监控；(4)应用超快相干光脉冲系统对量子点进行调控，探索Rabi振荡、Ramsey干涉等量子现象的新特征，制备高频、高相干性、可控单光子源。本项目的完成将使我国在量子相干调控领域率先进入国际先进行列。

Based on the unique polarization effects of quantum well semiconductor optical amplifier (QWSOA), this project will be focused on the development of ultrafast high-coherence optical pulse generation and measurement system for quantum coherent control, and its application to quantum dots control, exploring new phenomena and obtaining high quality single-photon source. The main contents include: (1) Reveal the microscopic mechanism of ultrafast polarization rotation in QWSOA, establish the pulse transmission model including polarization effects in QWSOA, and clarify the mechanism of all-optical differentiation and pulse mode-locking based on QWSOA polarization; (2) Study the pulse differential process and the feedback compensation for electro-optic modulator by experiment, establish a set of ultrafast tunable coherent optical pulse generator, and obtain high frequency, high-coherence, and large tunable subpicosecond pulses (twin pulses); (3) Study pulse mode-locking method of the ring cavity based on polarization effects in QWSOA, and achieve stable fs optical sampling pulses; Establish the mathematical model of multi-photon absorption in GaAsP material, and study optical sampling pulse measurement based on two-photon absorption to realize measurement and monitoring of low-power subpicosecond pulses; (4) Apply the ultrafast coherent optical pulses to control the semiconductor quantum dots, observe the new features of the Rabi oscillation, Ramsey interference, and other quantum phenomena, and obtain high-frequency, high-coherence, and controllable single-photon source.The completion of this project will promote the field of quantum coherence control in China to the first class in the world.