Controlling electron quantum dot qubits by spin-orbit interactions [Elektronische Ressource] / vorgelegt von Peter Stano

Controlling electron quantum dotqubits by spin-orbit interactionsDissertationzur Erlangung des Doktorgradesder Naturwissenschaften (Dr. rer. nat.)der Naturwissenschaftlichen Fakult¨at II-Physikder Universit¨at Regensburgvorgelegt vonPeter Stanoaus Partizanske, SlowakeiJanuar 2007The PhD thesis was submitted on 12.01.2007.The colloquium took place on 23.3.2007.Christoph Strunk ChairmanJaroslav Fabian 1st RefereeBoardofexaminers:Milena Grifoni 2nd RefereeAndreas Schaefer ExaminerAcknowledgmentsI would like here to express my gratitude to Prof. Jaroslav Fabian for his inval-ueable help and support over the whole period of my PhD studies. Without hiscontinual assistance this work would not get much farther than to this page.vContentsAcknowledgments vContents viList of tables ixList of figures xiiList of author’s publications xxi1 Introduction 12 Spectrum of a single electron quantum dot 52.1 Electron in a quantum dot: Single particle approximation . . . . . 52.1.1 Effective mass approximation . . . . . . . . . . . . . . . . 52.1.2 Overview of known results . . . . . . . . . . . . . . . . . . 82.1.3 Parameters of the model . . . . . . . . . . . . . . . . . . . 102.2 Spin-orbit influence on the energy spectrum . . . . . . . . . . . . 102.3 Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.4 Single dots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152.4.1 Spin hot spots . . . . . . . . . . . . . . . .