CAB in two identical JC atoms without RWa (a Bell state 1 for a=n/4 Initiated from Bell state 1, ESD appear in b)Bell state 2 for a=n/12 non-RWA; disappear in RWA O No periodicity of entanglement evolution for large g 0. 500 Gtπ 200 0 10 20Gtπ 0 500 10 Gtπ 200 0 20GtπCAB in two identical JC atoms without RWA (a) Bell state 1 for α=π/4 (b) Bell state 2 for α=π/12 □ Initiated from Bell state 1, ESD appear in non-RWA; disappear in RWA □ No periodicity of entanglement evolution for large g