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HL: Halbleiterphysik
HL 37: Quantenpunkte und -drähte: Transporteigenschaften
HL 37.13: Vortrag
Donnerstag, 11. März 2004, 13:15–13:30, H13
Controlling Spin States in Lateral Quantum Dots — •Clemens Rössler1, Andreas K. Hüttel1, Stefan Ludwig1, Dieter Schuh2, and Jörg P. Kotthaus1 — 1Center for NanoScience and Sektion Physik Ludwig-Maximilians-Universität, Geschwister Scholl Platz 1, D-80539 München, Germany — 2Walter-Schottky-Institut, Am Coulombwall 3, D-85748 Garching, Germany
Conventional semiconductor based electronics rely on the charge of many electrons for triggering transistors. In contrast, we attempt to reach the regime in which a logical bit is defined by a single electron spin. Here, quantum information processing promises new prospects regarding the basic notions of computing. Qubits defined by single electron spin states in lateral quantum dots can combine long coherence times with an easily tunable electrostatic confinement.
We discuss our novel split gate geometries and present first results towards manipulating electron spin states in quantum dots in the limit of few electrons.