论文标题
在Terahertz驱动的等离子和激子的杂种系统中，时间分辨的光致发光
Time-resolved Photoluminescence in Terahertz-driven Hybrid Systems of Plasmons and Excitons
论文作者
论文摘要
Ultrafast pump-probe technique is a powerful tool to understand and manipulate properties of materials for designing novel quantum devices.强烈的单个循环terahertz脉冲可以改变半导体量子点的固有特性，使其具有不同的发光。在等离子体和激子的混合系统中，这两个自由度之间的相干性和耦合在其光学性质中起着重要作用。因此，我们考虑了在混合系统中的Terahertz泵光学探针实验，在该系统中，Terahertz Pump Puls upper fuls fuls夫妇伴随量子点上的激子自由度。杂化系统的时间分解的光致发光表明，特征频率的响应是根据泵和探针脉冲之间的重叠而移动的。此外，在某些参数状态下，Terahertz Pump脉冲可以引起激子和等离子之间的共振。我们的结果表明，Terahertz驱动的混合动力系统可能是操纵材料特性并打开设计现代光学设备的新途径的多功能工具。
Ultrafast pump-probe technique is a powerful tool to understand and manipulate properties of materials for designing novel quantum devices. An intense, single cycle terahertz pulse can change the intrinsic properties of semiconductor quantum dots to have different luminescence. In a hybrid system of plasmon and exciton, the coherence and coupling between these two degrees of freedom play an important role on their optical properties. Therefore, we consider a terahertz pump optical probe experiment in the hybrid systems where the terahertz pump pulse couples to the exciton degrees of freedom on the quantum dot. The time resolved photoluminescence of the hybrid system shows that the response of the characteristic frequency shifts according to the overlap between the pump and probe pulses. Furthermore, the resonance between the exciton and plasmons can be induced by the terahertz pump pulse in some parameter regimes. Our results show the terahertz driven hybrid system can be a versatile tool for manipulating the material properties and open a new route to design modern optical devices.
