The European Physical Journal D

, Volume 41, Issue 1, pp 199–203 | Cite as

Entanglement generation in trapped atoms

  • X. HaoEmail author
  • S. Zhu
Quantum Optics and Quantum Information


The two atoms in the ion trap are entangled by the interaction with an external excited atom. The evolution of the entanglement is analytically derived without the decoherence. Considering the spontaneous decay from the environment, the evolution of the entanglement is similar to the damping Rabi oscillation. The generation of entanglement is induced by the dipole-dipole type interaction of atoms. It is found that the entanglement of two trapped atoms is robust with the uniform interaction with the external atom. The collective spontaneous emission from the coupling between the atoms may enhance the entanglement.


03.65.Ud Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.) 03.67.Mn Entanglement production, characterization, and manipulation 05.40.Ca Noise 


03.30.+e Entangling power of quantum evolutions 02.40.+d Interaction with environment and decoherence 15.10.En Ions: vibrational states 


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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Authors and Affiliations

  1. 1.School of Physical Science and Technology, Suzhou UniversityJiangsuP.R. China

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