Journal of University of Chinese Academy of Sciences >
States transfer of open quantum systems with single control field
Received date: 2010-11-26
Revised date: 2010-12-27
Online published: 2012-01-15
Supported by
Supported by the National Key Basic Research Program (2009CB929601), the National Science Foundation of China (61074050), and the undergraduate innovation fund of USTC
Dynamical model of open quantum systems in a matrix form is transformed into the model in a vector form using Liouville super-operator. Given a dynamical model of a dissipative quantum system in the presence of a time-dependent external control field, we achieve an improved optimal control law with the squared error between density matrices of system state and target state as the performance index. The states transfer experiment on a spin 1/2 particle system is carried out. Under the proposed optimal control, eigenstates, pure states, and mixed states are taken as initial and target states of the system, respectively. Detailed comparative analyses are given.
YANG Jie , CONG Shuang . States transfer of open quantum systems with single control field[J]. Journal of University of Chinese Academy of Sciences, 2012 , 29(1) : 17 -26 . DOI: 10.7523/j.issn.2095-6134.2012.1.003
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