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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Monday, 05 July 2004
(at 16:15 in room H34)
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Quantum computer - dream and realization

Rainer Blatt

Institut für Experimentalphysik
Universität Innsbruck
  Austria  






Quantum mechanical operations could process certain computational operations much more efficiently than classical processes. Building a quantum computer requires the implementation of quantum bits (qubits), quantum registers and quantum gates as well as the development of quantum algorithms. I will present current investigations on ion storage and laser cooling techniques and discuss experimental realizations of quantum registers and quantum gate operations. Using two and three trapped Ca+ ions in a linear Paul trap as qubits, we have generated two-particle entangled pre-programmed quantum states (Bell states) and three-particle states (GHZ and W states). These states were subsequently analysed tomographically and characterized by various entanglement measures. With Bell states as a source, entangled states were applied to teleportation and to improving precision measurements.

phys. dept. links: abstract(pdf file)

Within the Physikalisches Kolloquium SS04

last modified: 2018.10.24 Mi
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