超快高相干性可调光脉冲系统与量子调控应用

项目名称： 超快高相干性可调光脉冲系统与量子调控应用

项目编号： No.11274037

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 李政勇

作者单位： 北京交通大学

项目金额： 85万元

中文摘要： 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。

中文关键词： 量子阱半导体光放大器；超快偏振旋转；相干光脉冲；相干量子调控；单光子

英文摘要： 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

英文关键词： quantum-well semiconductor optical amplifier；ultrafast polarization rotation；coherent optical pulse；coherent quantum control；single photon