混合光力系统中量子关联动力学和弱力探测的研究

发布时间：2024-09-23 20:18

　　由于巧妙地利用了量子相干性,量子信息处理呈现出许多迷人的特性。在过去的十年里,量子相干性在多粒子系统中多以量子纠缠、量子关联、量子导引等具体形式呈现,得到众多研究者的关注研究。特别是,量子纠缠作为一个多粒子系统中最吸引人的非经典特性,它提供了许多关于量子物理、计算机科学、量子信息和许多其他领域的新见解。连续变量的量子关联在量子直接安全通讯和高比特传输率方面有着潜在的应用,所以连续变量的量子关联制备在量子信息的发展有重要作用。光力系统在实现高精度测量、超灵敏探测、双模压缩态、微观及宏观的纠缠和量子储存等方面有着潜在的应用。此外,已有研究表明混合量子光力系统中可以制备量子导引、振子基态和构造量子传感的量子器件等。所有这些新的应用成为研究量子光力系统的迷人的研究课题和潜在的平台。本文主要研混合量子光力系统中的量子关联动力学和弱力探测。全文分为以下几个部分:在第一章,简要介绍了量子理论的发展以及腔光力系统的历史背景。在第二章中,介绍本论文中用到的基础知识,包括量子纠缠、量子关联概念和开放量子系统的主要研究方法。此外,还介绍了腔光力系统中的弱力探测理论。在第三章中,我们研究了不同系统中量子关联动力...

【文章页数】：149 页

【学位级别】：博士

【文章目录】：
摘要
Abstract
Table of Major Symbols and Units
1 Introduction
    1.1 The development of quantum theory
    1.2 The background of cavity optomechanical systems
    1.3 The weak force sensing in optomechanicancal system
    1.4 The contents and outline of the thesis
2 Basic knowledge
    2.1 Quantum states
    2.2 Quantum entaiiglenieut and correlations
        2.2.1 Concept of entanglement and correlations
        2.2.2 The significance of some entangled states
        2.2.3 Some measurement tools of entanglement and correlations
    2.3 Research methods of open quantum systems
        2.3.1 Quantum master equation
        2.3.2 Heisenberg-Langevin equations
        2.3.3 Input-Output formulation
    2.4 Atom-field interaction
        2.4.1 Doscription of atom-field interaction
        2.4.2 Two-level atoms and classical field
        2.4.3 Interaction of two-level atoms with a quantized field:J-C model
    2.5 Cavity optomechanics
        2.5.1 Fal)ry-Perot optical cavity
        2.5.2 Basic principles of optoniechanical coupling
        2.5.3 Optonieclianical parameters
        2.5.4 Optomechanical cooling
        2.5.5 Concept of CQNC for optomechanical weak force measuroinonts
3 Measure of quantum coiTelations for some systems
    3.1 Overview and introduction
    3.2 Dynamics of quantmn correlations of four qubits system
        3.2.1 The model and Hamiltonian
        3.2.2 Dynamics of quantum correlations and entanglement
    3.3 Dynamics of quantum correlations for two-modes entangled coherentfields
        3.3.1 The theoretical model and Hainiltonian fonnulation
        3.3.2 Measure of quantum correlation for atom-field systems
    3.4 Summary
4 Measures of quantuin correlation and dynamical steering in optomechanical systems
    4.1 Overview and introduction
    4.2 Measurement of quantum correlation in optomedianical systems
        4.2.1 Theoretical models and dynamics
        4.2.2 Covariance matrix and measures of quantum correlations
    4.3 Dynamical quantum steering in electro-optonieclianical system
        4.3.1 Theoretical model of a hybrid electrooptomechanical system
        4.3.2 Dynamics calculation for the system
        4.3.3 Observation of bipartite and tripartite quantum steering
    4.4 Summary
5 Weak force sensing based on pre-cooling processes and CQNC in a hybrid optomechanical system
    5.1 Overview and introduction
    5.2 Theoretical model and its dynamics
    5.3 Pre-cooling of mechanical oscillator
    5.4 Adiabatic elimination of cavity field
    5.5 Improving quantum weak force sensing
    5.6 Summary
6 Conclusions and Future work
    6.1 Conclusions
    6.2 Innovation points
    6.3 Future work
参考文献
Publications
Acknowledgement
作者简介



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