The Dynamics of Quantum Correlations Between Two Atoms in Two Coupled Cavities
The dynamics of the quantum correlation between two atoms in two single-mode cavities is studied. For the initial Bell state |Ψ +〉, the quantum consonance is equal to the entanglement, and larger than quantum discord. For the initial Bell state |Φ +〉, the quantum consonance is larger than entanglement, but not larger than quantum discord all the time. As the increase of the cavity-cavity coupling strength, the evolution period of quantum correlation becomes smaller. Consonance is not smooth at some points while cavities are coupled with each other.
KeywordsQuantum correlations Bell state Density matrix
Special thanks to Prof Li Chong and Zheng Li for helpful discussions. This work is supported by the National Nature Science Foundation of China (under Grant No. 11105021).