1Research Centre for Theoretical Physics, Fudan University, Shanghai 200433
2National Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083
Photoinduced Polaron-Splitting in Polymer
TANG Fei1,2;XU Xiao-Hua1;SUN Xin1,2
1Research Centre for Theoretical Physics, Fudan University, Shanghai 200433
2National Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083
Abstract： We simulate a relaxation process of a polaron in polymer after photo excitation, and a new state is realized by means of proper excitation. The original lattice configuration of the polaron splits into two symmetrical peaks, and consequently a double-well potential is formed, where the wavefunctions of electron localized in these two wells are entangled. Thus, this process provides a method to generate the Schrödinger cat state. According to the dynamical process of the lattice configuration, the relaxation time of splitting is about 150fs.
2004, Vol. 21 
