Quantifying Entangled Properties in Photon-Added Two-Mode Squeezed Coherent States

The entanglement between the inter-modes in photon-added two-mode squeezed coherent states have been theoretically analyzed by employing the SV criteria, EPR correlation, and inseparability criterion, respectively. The entangled properties of the resultant states are clearly displayed in the numerical results. It is found that after the photon-excited operation on each mode in two-mode squeezed coherent states, the entanglement properties can be effectively enhanced.