Optimized control of geometric quantum discord

We investigate the geometric quantum discord of coupling superconducting qubits in Fock state. In the non-Markovian noisy channel, the geometric quantum discord exhibits typical sudden change. The quantum correlation effect between qubits can be enhanced greatly and the initial disappearance time of entanglement can be delayed under certain circumstance through linearly modulating the coupling coefficient between qubits by a proper control function.