Abstract:
The manipulation of two 2nd-order quantum pathways has been successfully demonstrated experimentally in atomic Rubidium. This work would explore the coherent control of path-ways in the quantum system with
N intermediate states connecting the initial and target states. A 4
N-block scheme is proposed to control the
N 2nd-order pathways which are driven by a weak broadband pulse. The model with
N=3 is given as an example to demonstrate our strategy. In this scheme, boundaries of the spectral blocks are functions of the resonant frequencies, and the resonant and non-resonant contributions interfere mutually to achieve the quantum pathway control e ectively. The simple strategy may provide a practical choice for pathway manipulation experiments since there are only 2
N phase variables to adjust.