Entanglement generation in trapped atoms
School of Physical Science and Technology, Suzhou University, Suzhou, Jiangsu, 215006, P.R. China
Revised: 3 August 2006
Published online: 20 September 2006
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.
PACS: 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
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2006