基于纳米结构的太赫兹波源研制问题已形成量子光学一个新的研究热点。申请人在该领域提出了原创性的时间-空间对称性理论[New J. phys.,Phys.Rev.A]，该理论揭示了基于高次谐波的太赫兹波辐射模式选择定则的深层量子机制，并可解释已报道的一系列由于系统时间[Phys. Rev. Lett. 94,243901]或空间[Phys. Rev. Lett. 87,103901]对称性破缺引起的谐波产生。本项目将对纳米结构新奇的太赫兹波产生机制及其特性调控展开三个方面研究：1.基于耦合量子点光学系统时间对称性破缺的太赫兹波产生及其调控。2．基于耦合量子点光学系统超拉曼辐射的太赫兹波旋光性研究及其调控。3．基于时间-空间对称性理论的石墨烯太赫兹波辐射特性研究。通过本项目为基于耦合量子点、石墨烯的太赫兹纳米光电子器件在航天领域量子通讯、遥感、反隐形，以及量子光学和自旋电子学的应用提供理论基础。

The quantum optics is concerned the research of terahertz wave source basing on nanostructures. Some novel results have been obtained by the proposer in this field, particularly, temporal-spatial symmetry theory was proposed[New J. phys., Phys. Rev. A], which revealed the deep quantum mechanism of the selection rule of terahertz wave basing on high order harmonics. The generation of harmonics reported can be well explained by the breaking of temporal symmetry[Phys. Rev. Lett. 94,243901] or spatial symmetry [Phys. Rev. Lett. 87,103901] of the systems. The project is focused on three aspects of the novel quantum mechanism of terahertz source as well as tailoring the emission spectra: first,the generation and tailoring of terahertz wave by the breaking of the temporal symmetry in the system of optically coupled quantum dots;second, the study of optical activity and the tailoring of terahertz wave from hyper-Raman radiation in the system of optically coupled quantum dots; third, the study of the characteristic of terahertz wave in graphene on the considerarion of temporal-spatial symmetry. The studies are meaningful to the applications of terahertz nano-photoelectron device basing on coupled quantum dots and graphene in space, such as quantum communication, remote sensing ,anti-stealth, quantum optics, electronic and spintronic.