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München 2004 – wissenschaftliches Programm

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MO: Molekülphysik

MO IV: HV IV

MO IV.1: Hauptvortrag

Donnerstag, 25. März 2004, 11:00–11:30, HS 332

Molecular BEC and Quantum Computing: An Optimal Control Approach — •Regina de Vivie-Riedle1,2, Thomas Hornung2, Ulrike Troppmann1, and Carmen Tesch21Department Chemie, Ludwig-Maximilians-Universität München — 2Max-Planck-Institut für Quantenoptik, Garching

Control of quantum systems with shaped femtosecond laser pulses is an exciting research field with increasing impact in many different areas of chemistry and physics. The focus of our work is on molecular systems which ultimately can be used as molecular devices. Our basic tool is the Optimal Control Theory which allows us to find the optimal laserfield for any selected objective. To obtain a flexible, realiable and robust tool, we extended the control algorithms to handle complex molecules, to include multiple target states as well as laboratory constraints.

Two different applications combining concepts of molecular physics with topics of interest in quantum optics will be presented. First control scenarios for the coherent formation of cold molecules with a sequence of optimized laserpulses will be discussed as well as the subsequent preparation of fast phase gates in the formed vibrational groundstate of the diatomic /1/. The second example is the implementation of a set of elementary quantum gates and quantum algorithms operating on molecular vibrational modes /2/.
[1] Th. Hornung, S. Gordienko, R. de Vivie-Riedle,B.J. Verhaar Phys. Rev., A66, (2002), 043607.
[2] C. M. Tesch, R. de Vivie-Riedle, Phys. Rev. Lett., 89, (2002), 157901.

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