Applying optimal control theory for elements of quantum computation in molecular systems

Elements of quantum computation are implemented in a vibrationally excited molecule applying optimal control theory. The two different IR-active modes of acetylene are taken as a two-qubit-system. Optimal control theory is used to design laser pulses that allow transitions within each qubit separately. Calculations for initial state preparation and basic quantum gates are presented. (C) 2001 Elsevier Science B.V. All rights reserved.