摘要
Geometric quantum discord（GQD） and Berry phase between two charge qubits coupled by a quantum transmission line are investigated. We show how GQDs evolve and investigate their dependencies on the parameters of the system.We also calculate the energy and the Berry phase and compare them with GQD, finding that there are close connections between them.
Geometric quantum discord（GQD） and Berry phase between two charge qubits coupled by a quantum transmission line are investigated. We show how GQDs evolve and investigate their dependencies on the parameters of the system.We also calculate the energy and the Berry phase and compare them with GQD, finding that there are close connections between them.
基金
Project supported by the National Natural Science Foundation of China(Grant No.11174024)
the State Key Laboratory of Low-Dimensional Quantum Physics(Tsinghua University)(Grant No.KF201407)
the Fundamental Research Funds for the Central Universities of Beihang University(Grant No.YWF-14-WLXY-017)
Beijing City Youth Talent Plan
