Investigations On Coupling Feature Between Quantum Dots And Metal Nanowires

In modern society, the requestion of high speed computation and communi-cation become more and more important for highly developing science and tech-nology. The classical information based on the electronic technology, although has achieved great success during the last century, could not satisfy such request due to its own limitation. Quantum information based on the theory of quantum mechanics, which has been proved to be the most successful theory to describe the micro-system, has been shown great advantages on speed, security, comparing with the classical technology.As we know, the traditional optical transmission waveguides (like optical fibre) are all limited by the diffraction limit, and thus can not be manufactured in very small size, which further limits the integration of optical devices. Fortunately, surface plasmon optics would provide a possible solution. When light is shined on a metal nanowire, always refereed to one-dimension nanostructure, photons may be transformed into surface plasmon and transmit on the surface of the nanowire in the sub-wavelength range. Thus the nanowire could be used as a potential waveguide for the nano devices integration and it has drawn much attention from many researchers.Single photon source is a kernel component for quantum information and quantum dot is a widely accepted candidate for manufacturing it. Study on the coupling between metal nanowire and quantum dot mainly focuses on the fluorescence enhancement and transmit modulation of quantum dot caused by surface plasmon, which could be used for preparing super bright single photon source, and also on the feature of photon transmission along the metal nanowire, which would provide deeper understanding of the relationship between quantum information and surface plasmon.This thesis presents the works on quantum dots and silver nanowires I have done during the past five years. It included:1. Study on high order LG mode laser transmission alone silver nanowire. LG mode is a commonly used laser mode and different LG modes have differ-ent orbital angular momentums(OAM), it has been proved experimentally that photons can be entangled in these modes. We observe the transmis- the question projecting lenses array with large field of view on the limited imaging plane of one CMOS and the question of serious defocus and inclination of received lenses locating at the edge of compound eye are studied, one solution is put forward that refractive lens is added to the location between lenses array and CMOS plane. For the selected CMOS image sense, its driver is developed, and pixel data is collected by FPGA. Then the data is sent to PC by USB2.0. Finally, the received images with compound eye are displayed and the imaging information is further copied with.2. After the current technology for target positioning with binocular vision is studied and summarized, sub-coordinate system of compound eye and its world coordinate system are set up, then the mathematical model and calibrating content for target positioning with compound eye are established. In order to help express complex relationship of incident ray and solve the question setting up mathematical model, the ray, form target point to received lens and to refractive lens and to CMOS plane, is split into two parts. One is the linear part from target point to received sub-lens of compound eye, and the other is the nonlinear part from received sub-lens to refractive lens and to CMOS plane. Based on the existing calibrating model, after those methods are analyzed, the calibrating method which establishes the corresponding relationship between imaging points and its corresponding incident angels of every lens of compound eye is put forward.3. According to the calibrating theory, calibrating scheme is designed, and the calibrating goal is completed. The experimental equipments and laboratory instruments of plasma television, plane mirror interferometer, semiconductor laser, level instrument and horizontal moving guide rail are selected. The plasma television is selected as the target plane. The parallelism between planes of compound eye and of target is adjusted by interferometer. The verticality between horizontal moving axle and target plane is regulated by the superposition of laser dot and the fixed point in the target plane in the moving process of target plane. The uniformities between X-axis of coordination system of compound eye and row on the target, and between Y-axis of compound eye coordination system and column on the target are adjusted. Based on the work above, the intersection of optical axis of center...