Molecular quantum control landscapes in von Neumann time-frequency phase space

作者：Ruetzel Stefan^*; Stolzenberger Christoph; Fechner Susanne; Dimler Frank; Brixner Tobias; Tannor David J

来源：Journal of Chemical Physics, 2010, 133(16): 164510.

DOI：10.1063/1.3495950

Recently we introduced the von Neumann representation as a joint time-frequency description for femtosecond laser pulses and suggested its use as a basis for pulse shaping experiments. Here we use the von Neumann basis to represent multidimensional molecular control landscapes, providing insight into the molecular dynamics. We present three kinds of time-frequency phase space scanning procedures based on the von Neumann formalism: variation of intensity, time-frequency phase space position, and/or the relative phase of single subpulses. The shaped pulses produced are characterized via Fourier-transform spectral interferometry. Quantum control is demonstrated on the laser dye IR140 elucidating a time-frequency pump-dump mechanism.

• 出版日期2010-10-28