Generation of long-living entanglement between two separate atoms

Details Generation of long-living entanglement between two separate atoms Generation of long-living entanglement between two separate atoms

2004-10-05

arxiv.org/abs/quant-ph/0410033v1

Physics

Quantum Physics

13 pages, 5 figures

Scientific paper

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.

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