Multilevel atomic entanglement induced by spontaneous emission in free space
School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian, 116023, P.R. China
Corresponding author: a email@example.com
Revised: 29 January 2008
Published online: 5 March 2008
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.
PACS: 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
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008