摘要
We theoretically investigate the coherent enhancement of resonant two-photon transitions （TPT） in a three-level atomic system. The TPT can be coherently enhanced by modulating spectral amplitude due to eliminating the destructive interference, though partial laser energy losses. Maximal enhancement of TPT can be achieved by modulating spectral phase due to establishing completely constructive interference. Our research provides a theoretical basis for experimental investigation and appears to have potential application on coherent control in the complicated quantum system.
We theoretically investigate the coherent enhancement of resonant two-photon transitions （TPT） in a three-level atomic system. The TPT can be coherently enhanced by modulating spectral amplitude due to eliminating the destructive interference, though partial laser energy losses. Maximal enhancement of TPT can be achieved by modulating spectral phase due to establishing completely constructive interference. Our research provides a theoretical basis for experimental investigation and appears to have potential application on coherent control in the complicated quantum system.
基金
Supported by the National Natural Science Foundation of China under Grant No 10574046, the National Basic Research Programme of China under Grant Nos 2006CB806006 and 2006CB921105, the Programme for Changjiang Scholars and Innovative Research Team in University （PCSIRT）, the Programme for New Century Excellent Talents in University （NCET-04-0420）, the Doctoral Programme of High Education （No 20050269011）, the Phosphor Programme of Shanghai Science and Technology Committee （No 06QH14003）, and the Shanghai Pujiang Programme （No 06PJ14035）.
