LIU Huanhuan, XU Yonggang, ZHANG Jing, WANG Jiang, ZHANG Mengqiao, YAO Jie, LI Yongfang*
(School of Physics and Information Technology, Shaanxi Normal University, Xi′an 710119, Shaanxi, China)
Abstract:
The physical mechanism of the complete population transfer process is investigated in terms of CDF in two-level atomic system. The main role of adding a CDF is to modify the light field form of the Rabi frequency for the system, and such a quick pulse light field can make the eigenvalues of the system have two degenerate points which have the same energy and are nearest between them. Through such two energy degenerate points, the system can achieve two diabatic processes，where the second step is the inverse of the first one, or the time reversal process, restoring the system to its original state eventually and achieving the super adiabatic evolution.
KeyWords:
two-level atomic system; counter-diabatic field compensation method; super- adiabatic evolution; complete population transfer
