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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 Tesch2 — 1Department 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.