發(fā)布時間：2024-09-23 20:18

　　由于巧妙地利用了量子相干性,量子信息處理呈現(xiàn)出許多迷人的特性。在過去的十年里,量子相干性在多粒子系統(tǒng)中多以量子糾纏、量子關(guān)聯(lián)、量子導(dǎo)引等具體形式呈現(xiàn),得到眾多研究者的關(guān)注研究。特別是,量子糾纏作為一個多粒子系統(tǒng)中最吸引人的非經(jīng)典特性,它提供了許多關(guān)于量子物理、計算機科學(xué)、量子信息和許多其他領(lǐng)域的新見解。連續(xù)變量的量子關(guān)聯(lián)在量子直接安全通訊和高比特傳輸率方面有著潛在的應(yīng)用,所以連續(xù)變量的量子關(guān)聯(lián)制備在量子信息的發(fā)展有重要作用。光力系統(tǒng)在實現(xiàn)高精度測量、超靈敏探測、雙模壓縮態(tài)、微觀及宏觀的糾纏和量子儲存等方面有著潛在的應(yīng)用。此外,已有研究表明混合量子光力系統(tǒng)中可以制備量子導(dǎo)引、振子基態(tài)和構(gòu)造量子傳感的量子器件等。所有這些新的應(yīng)用成為研究量子光力系統(tǒng)的迷人的研究課題和潛在的平臺。本文主要研混合量子光力系統(tǒng)中的量子關(guān)聯(lián)動力學(xué)和弱力探測。全文分為以下幾個部分:在第一章,簡要介紹了量子理論的發(fā)展以及腔光力系統(tǒng)的歷史背景。在第二章中,介紹本論文中用到的基礎(chǔ)知識,包括量子糾纏、量子關(guān)聯(lián)概念和開放量子系統(tǒng)的主要研究方法。此外,還介紹了腔光力系統(tǒng)中的弱力探測理論。在第三章中,我們研究了不同系統(tǒng)中量子關(guān)聯(lián)動力...

【文章頁數(shù)】：149 頁

【學(xué)位級別】：博士

【文章目錄】：
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
參考文獻
Publications
Acknowledgement
作者簡介



本文編號：4006122