The European Physical Journal D

, Volume 47, Issue 2, pp 277–282 | Cite as

Multilevel atomic entanglement induced by spontaneous emission in free space

  • G. H. YangEmail author
  • L. Zhou
Quantum Optics and Quantum Information


We investigate two identical Λ-type atoms in free space, and focus on the entanglement between the two atoms. We derive a master equation for the atomic subspace and solve it analytically to show how the spontaneous emission from the two atoms system induces entanglement. The magnitude of the entanglement and the steady state entanglement are found to be strongly dependent on the initial states and the orientation of the dipoles of the two atoms.


42.50.Ct Quantum description of interaction of light and matter; related experiments 42.50.Md Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals 03.65.Ud Entanglement and quantum nonlocality 


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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  1. 1.School of Physics and Optoelectronic Technology, Dalian University of TechnologyDalianP.R. China

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