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Preservation of entanglement in a two-qubit-spin coupled system |
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| Authors: | Yu-Chen Hou Guo-Feng Zhang Yan Chen Heng Fan |
| Affiliation: | 1. School of Electronic and Information Engineering, Beihang University, Xueyuan Road No. 37, Beijing 100191, PR China;2. School of Physics and Nuclear Energy Engineering, Beihang University, Xueyuan Road No. 37, Beijing 100191, PR China;3. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, PR China |
| Abstract: | A theoretical scheme for preserving the entanglement in a two-qubit-spin coupled system in the presence of Dzyaloshinskii–Moriya (DM) anisotropic antisymmetric interaction is proposed. On the basis of a sequence of operations performed periodically on the system, the scheme can preserve the entanglement of the system starting from any initial state with any desired high precision for any desired long duration. |
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