We investigate the effects of the directions of Dzyaloshinskii–Moriya(DM) interaction vector and magnetic field on the quantum discord in the pure DM model. For different directions of DM vector, we find that there a...We investigate the effects of the directions of Dzyaloshinskii–Moriya(DM) interaction vector and magnetic field on the quantum discord in the pure DM model. For different directions of DM vector, we find that there are different optimal parameter components of magnetic field. Moreover, we find that the optimal parameter components rules are the same for the Hamiltonian H_1 and H_2. According to the rules, for a certain axial DM vector, we can get the maximal quantum discord by adjusting the direction of the external magnetic field, which is feasible under the current experimental technology.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos.11204061,11374085,11104057,and 11204002the Anhui Provincial Natural Science Foundation under Grant No.1408085MA16+4 种基金the Anhui Provincial Candidates for Academic and Technical Leaders Foundation under Grant No.2015H052the discipline top-notch talents Foundation,the Excellent Young Talents Support Plan of Anhui Provincial Universitiessupported by National Natural Science Foundation of China under Grant No.11274010the Specialized Research Fund for the Doctoral Program of Higher Education under Grant No.20113401110002the 211 Project of Anhui University,and the Personnel Department of Anhui Province
文摘We investigate the effects of the directions of Dzyaloshinskii–Moriya(DM) interaction vector and magnetic field on the quantum discord in the pure DM model. For different directions of DM vector, we find that there are different optimal parameter components of magnetic field. Moreover, we find that the optimal parameter components rules are the same for the Hamiltonian H_1 and H_2. According to the rules, for a certain axial DM vector, we can get the maximal quantum discord by adjusting the direction of the external magnetic field, which is feasible under the current experimental technology.
