Discussion on Maximally Entangled States of Two Coupled Two-Level Particles by Coherent State Approximation
ZHANG Zheng-Jie1, WANG Ke-Lin2,3
1College of Information Engineering, Chengdu University of Technology, Chengdu 610059
2College of Science, Southwest University of Science and Technology, Mianyang 621002
3Department of Modern Physics, University of Science and Technology of China, Hefei 230026
Discussion on Maximally Entangled States of Two Coupled Two-Level Particles by Coherent State Approximation
ZHANG Zheng-Jie1;WANG Ke-Lin2,3
1College of Information Engineering, Chengdu University of Technology, Chengdu 610059
2College of Science, Southwest University of Science and Technology, Mianyang 621002
3Department of Modern Physics, University of Science and Technology of China, Hefei 230026
Abstract： We analyse the best condition for generating the maximally entangled states of the system containing two coupled two-level particles by the coherent approximation method beyond rotating wave approximation. It is found that the maximally entangled states are obtained when the detuning ν and the strength Ω of driving laser satisfy the condition ν/Ω =2.5. The maximum average probability of entangled state pa max(ν, Ω) has the best stability relying on ν and Ω when ν approx 2Ω.
(Entanglement measures, witnesses, and other characterizations)
引用本文:
ZHANG Zheng-Jie;WANG Ke-Lin;. Discussion on Maximally Entangled States of Two Coupled Two-Level Particles by Coherent State Approximation[J]. 中国物理快报, 2006, 23(6): 1369-1371.
ZHANG Zheng-Jie, WANG Ke-Lin,. Discussion on Maximally Entangled States of Two Coupled Two-Level Particles by Coherent State Approximation. Chin. Phys. Lett., 2006, 23(6): 1369-1371.
2006, Vol. 23 
