Generation of long-living entanglement between two separate atoms
  A scheme for non-conditional generation of long-living maximally entangled states between two spatially well separated atoms is proposed. In the scheme, $\Lambda$-type atoms pass a resonator-like equipment of dispersing and absorbing macroscopic bodies giving rise to body-assisted electromagnetic field resonances of well-defined heights and widths. Strong atom-field coupling is combined with weak atom-field coupling to realize entanglement transfer from the dipole-allowed transitions to the dipole-forbidden transitions, thereby the entanglement being preserved when the atoms depart from the bodies and from each other. The theory is applied to the case of the atoms passing by a microsphere. 
\"Ozg\"ur \c{C}akir (1), Ho Trung Dung (2), Ludwig Kn\"oll (3),   Dirk-Gunnar Welsch (3) ((1) Department of Physics, Bilkent...