Study On Manipulations Of Multi-transparency Windows And Fast-slow Light In A Hybrid Cavity Optomechanical System

In recent years,due to the continuous development of industrial technology,people have produced high-quality components with nano-scale size.These results provide great convenience for researchers to simulate micro-components and study quantum mechanical phenomena of micro-materials.Among them,cavity optics,which is a hot research field recently,is discussed.Cavity optics studies the interaction between light and force by studying the effect of radiation pressure on the oscillator.Cavity optics has attracted much attention of researchers because of its key role in detecting gravitational waves and its remarkable advantages in measuring small displacements,masses and signals.In addition,through a series of expansion and intersection with other scientific research fields,the theory of cavity optics has been enriched,the application field has been broadened,and the cavity optics has made great progress,such as directional amplification,entanglement research and so on.In this thesis,the transparency phenomena and manipulation in the output field are studied by the hybrid cavity photodynamic system,and the fast and slow light effects are studied by the systemIn this thesis,the manipulation of transparent window is studied by using a hybrid cavity photodynamic system.The results show that the position,width and depth of four transparent windows can be manipulated arbitrarily in the output field of the system.In this paper,we find that the subsystems of the system can not only produce independent effects,but also interact with each other through the selection of existing experimental parameters and reasonable parameters.Therefore,the system has more control dimensions.In addition,the attenuation factors of subsystems are also considered in this paper,so it has certain reference and reference significance for practical experiments.The hybrid systerm consists of two coupled optical cavities,one of which traps the atomic ensemble,and the movable mechanical oscillator of the cavity interacts with another mechanical oscillator through Coulomb force.The system studies the system output by choosing the actual experimental parameters and reasonable parametersFurthermore,the fast and slow light effects are studied by using a simulated hybrid photodynamic system.The results show that the system produces slow light phenomenon under the condition of red sideband,because the imaginary part of the output field decreases at the position of transparent window;but when blue sideband is used,both fast and slow light are produced in the output light,because the imaginary part of the position of transparent window increases and decreases.Moreover,the simulation results confirm that with the increase of the number of atoms and the coupling strength;the speed of light becomes slower,and the speed of light will be accelerated when a smaller optical power is chosen.