Entanglement of Three Atoms Induced by a Coherent Field |
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Authors: | WANG Xiu-Wu CAI Jin-Fang |
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Affiliation: | School of Science, North China Electricity Power University, Baoding 071003, China School of Science, Beijing Institute of Technology, Beijing 100081, China |
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Abstract: | We calculate the concurrence and spin squeezing parameter of three atoms induced by a coherent field.It shows that when the mean numbers of photon of the field is very small, concurrence exhibits a certain kind of approximative periodic vibration. With the increase of the mean numbers of photon, its periodicity will be interrupted.As for the relationship between the concurrence and spin squeezing, numeric result shows that under Dick model, spin squeezing serves as a sufficient but not necessary condition for concurrence. |
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Keywords: | entanglement concurrence spin squeezing |
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