Düsseldorf 2007 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 64: Quantum Control II
MO 64.7: Vortrag
Freitag, 23. März 2007, 15:30–15:45, 6F
Molecular quantum computing with vibrational qubits in MnBr(CO)5 — Brigitte Schneider1, •Ulrike Troppmann2, Karl Kompa1, and Regina de Vivie-Riedle2 — 1MPI für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching — 2LMU Department Chemie, Butenandt-Str. 11, 81377 München
We use Manganese-pentacarbonyl-bromide [MnBr(CO)5] as a processor unit for quantum computing1. The qubits encoded in two strong IR-active vibrational normal modes are operated by laser pulses in the femto- to picosecond range. Different logical operations are achieved by special pulse shapes optimized via Optimal Control Theory (OCT). For the universal sets of elementary global quantum gates simply structured pulses with low energies about 1 µJ and high switching efficiencies above 99% are obtained. With regard to experimental realization the molecule is immobilized in a siliconoxide structure (MFI zeolite). Environmental interactions and other side effects influencing the controllability of the molecule are discussed.
1B. M. R. Korff, U. Troppmann, K. L. Kompa and R. de Vivie-Riedle, JCP 123 (2005) 244509
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