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The influences of dipole--dipole interaction and detuning on the sudden death of entanglement between two atoms in the Tavis--Cummings model |
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| Authors: | Chen Li Shao Xiao-Qiang and Zhang Shou |
| Affiliation: | Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; Department of Physics, College of Science, Yanbian University, Yanji 133002, China; Department of Physics, College of Science, Yanbian University, Yanji 133002, China;Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China |
| Abstract: | The influences of dipole--dipole interaction and detuning on the entanglement between two atoms with different initial tripartite entangled W-like states in the Tavis--Cummings model have been investigated by means of Wootters' concurrence, respectively. The results show that the entanglement between the two atoms can be enhanced via appropriately tuning the strength of dipole--dipole interaction of two atoms or the detunings between atom and cavity, and the so-called sudden death effect can be weakened simultaneously. |
| Keywords: | concurrence sudden death of entanglement dipole--dipole interaction detuning |
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