期刊论文

Shiqing Tang

英文

Photonics

2304-6732

2022

9

11

844-

10.3390/photonics9110844

Conceptualization, W.L. and S.T.; methodology, J.Y. and Y.L.; software, C.Z. and Y.S; validation, W.L., C.Z., Y.S., Y.S., J.Y. and S.T.; formal analysis, W.L.; investigation, W.L.; resources, W.L., Y.L., Y.S., J.Y. and S.T; data curation, C.Z.; writing—original draft preparation, W.L. and S.T.; writing—review and editing, W.L. and C.Z.; visualization, C.Z. and Y.S.; supervision, W.L.; project administration, W.L.; funding acquisition, W.L. All authors have read and agreed to the published version of the manuscript. This work was supported by the NSFC (Grant No. 11947069, No. 11905053, No. 12205092, and No. 12205088), the Scientific Research Fund of Hunan Provincial Education Department (Grant No. 20C0495, No. 21B0639, and No. 21B0647), and the Hunan Provincial Natural Science Foundation of China (Grant No. 2020JJ4146).

本校为其他机构

In this paper, we investigate the effect of the Dicke quantum phase transition on the Berry phase of the two impurity qubits. The two impurity qubits only have dispersive interactions with the optical field of the Dicke quantum system. Therefore, the two impurity qubits do not affect the ground state energy of the Dicke Hamiltonian. We find that the Berry phase of the two impurity qubits has a sudden change at the Dicke quantum phase transition point. Therefore, the Berry phase of the two impurity qubits can be used as a phase transition signal for the Dicke quantum phase transition. In additi...