Discussion on Maximally Entangled States of Two Coupled Two-Level Particles by Coherent State Approximation
Zhang Zheng-Jie, Wang Ke-Lin · Chinese Physics Letters · 2006
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 p a max (ν,Ω) has the best stability relying on ν and Ω when ν≈2Ω.