局域表面等离激元-量子复合体系中量子干涉的理论研究  

Theoretical studies of the interference effects on the localized surface plasmon-quantum emitter hybrid system

作　　者：赵东星[1] 陈弘毅[1] 古英[1,2,3] 任娟娟[1] 龚旗煌[1,2,3] ZHAO DongXing CHEN HongYi GU Ying REN JuanJuan QONG QiHuang(State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China Collaborative Innovation Center of Quantum Matter, BeOing 100871, China Collaborative Innovation Center of Extreme Optics, Shanxi University Taiyuan 030006, China)

机构地区：[1]北京大学物理学院,人工微结构和介观物理国家重点实验室,北京100871 [2]量子物质协同创新中心,北京100871 [3]山西大学极端光学协同创新中心,太原030006

出　　处：《中国科学：物理学、力学、天文学》2017年第2期1-18,共18页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：国家重点基础研究发展计划(编号:2013CB328700);国家自然科学基金(编号:11525414,11374025,91221304)资助项目

摘　　要：局域表面等离激元与量子发射体构成的复合体系具有比其单个子单元更丰富的性质和功能.本文从理论上研究了量子干涉效应对复合体系吸收和散射性质的影响以及对原子体系非线性效应的调控.首先,由于存在不同跃迁通道之间的干涉,体系支持暗表面等离激元诱导的无布居数反转增益和光强依赖的吸收谱效应.其次,结构开放性诱导的干涉使复合体系能够在纳米尺度、中等强度耦合下调控散射场的光子统计性质.最后,基于表面等离激元的各向异性珀塞尔系数,在纳米尺度演示了对于克尔非线性的调控.这些发现丰富了该复合体系的吸收和散射性质以及原子体系的非线性性质,并且有可能用于量子态制备、带通滤波器、折射率传感、光子统计调控、片上的全光非线性器件等方面.The quantum emitter-metallic nanoparticle hybrid system possesses more functions and properties than the individual subunits. Here we perform theoretical studies about the interference effects on the absorption, scattering and the nonlinear effects enhancement in the hybrid system. On the one hand, based on the interference mechanism between multiple transitions, the effects of dark plasmon induced gain without inversion and methods of the absorption spectrum tailoring are proposed. On the other hand, we find that the hybrid system can realized the nanoscale control of photon statistics without the need of strong coupling. At last, using the plasmonic structure which gives an anisotropic Purcell factors, we theoretically demonstrate the effective modulation of the Kerr effects. These studies enrich the absorption, scattering and nonlinear properties of the hybrid system, which may have potential applications for the quantum state preparation, band-pass filter,refractive index sensing, photon statistics control and on-chip photonic nonlinear devices.

关 键 词：局域表面等离激元 量子发射体 量子干涉 珀塞尔系数 克尔非线性 腔量子电动力学 

分 类 号：O431.2[机械工程—光学工程]