Münster 1999 – scientific programme

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HL: Halbleiterphysik

HL 13: Hauptvortrag

HL 13.1: Invited Talk

Tuesday, March 23, 1999, 09:30–10:30, H1

Quantum computation with solid state devices — •J. E. Mooij — Delft University of Technology

A quantum computer requires coherent manipulation of ’qubits’, quantum systems that can be in a general superposition of two states. Controlled interaction between these qubits is needed. The general concept of quantum computing will be discussed shortly, together with the resultant hardware requirements. Using NMR techniques on spins in molecules and laser manipulation of electron states in trapped atoms or ions, rudimentary quantum computers have been realized experimentally. Solid state devices suffer from relatively short decoherence times, but harbour the promise of controlled integration. Possible schemes for building a quantum computer with solid state elements have been proposed, based on semiconducting or superconducting systems.