Spin-orbit coupling effects in two-electron coupled quantum dots [Elektronische Ressource] / vorgelegt von Fabio Baruffa

Spin-orbit coupling effects intwo-electron coupled quantum dotsDissertationzur Erlangung des Doktorgradesder Naturwissenschaften (Dr. rer. nat.)derhaftlichen Fakultät II-Physikder Universität Regensburgvorgelegt vonFabio Baruffaaus Napoli, ItalienMai 2010The PhD thesis was submitted on May 2010The colloquium took place on 16th of July 2010Prof. Dr. S. Ganichev ChairmanProf. Dr. J. Fabian 1st RefereeBoardofexaminers:Prof. Dr. M. Grifoni 2ndProf. Dr. G. Bali ExaminerContentsAcknowledgments ixIntroduction 11. Overview of Quantum Computation 51.1. Classical unit of information: the bit . . . . . . . . . . . . . . . . . . 51.2. Quantum unit of the qubit . . . . . . . . . . . . . . . . . 61.3. Logical quantum gate . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.3.1. Single qubit gate . . . . . . . . . . . . . . . . . . . . . . . . . 101.3.2. Single qubit dynamics . . . . . . . . . . . . . . . . . . . . . . 111.3.3. Two qubit gate . . . . . . . . . . . . . . . . . . . . . . . . . . 121.4. Quantum parallelism . . . . . . . . . . . . . . . . . . . . . . . . . . . 141.5. DiVincenzo criteria for Quantum Computation . . . . . . . . . . . . . 161.6. Quantum dots as qubit . . . . . . . . . . . . . . . . . . . . . . . . . . 172. Quantum Dots (QD) 192.1. Two dimensional electron gas (2-DEG) . . . . . . . . . . . . . . . . . 192.2. Quantum dot fabrication . . . . . . . . . . . . . . . . . . . . . . . . . 202.3. Confinement potential . . . . . . . . .