Quantum entanglement dynamics based on composite quantum collision model
Li Xiao-Ming, Chen Yong-Xu, Xia Yun-Jie, Zhang Qi, Man Zhong-Xiao
       

Negativity of the system against collision rounds n for different coupling strength M. The parameters are κ = λ = γ = 0.05, ω = 1, T = 1, Γ = 1.2, α = 0, θ = π/4.