1302.6541 (Pankaj K. Jha et al.)

Ultra-short, off-resonant, strong excitation of two-level systems    [PDF]

Pankaj K. Jha, Hichem Eleuch, Fabio Grazioso

We present a model describing the use of ultra-short strong pulses to populate the excited level of a two-level quantum system. In particular, we study an off-resonance excitation with a few cycles pulse which presents a smooth phase jump i.e. a change of the pulse's phase which is not step-like, but happens over a finite time interval. A numerical solution is given for the time-dependent probability amplitude of the excited level. The enhancement of the excited level's population is optimized with respect to the shape of the phase transient, and to other parameters of the excitation pulse.

View original: http://arxiv.org/abs/1302.6541