Heralded generation of Bell states using atomic ensembles
arXiv:1310.4733 · doi:10.1103/PhysRevA.88.063844
Abstract
We propose a scheme that utilizes the collective enhancement of a photonic mode inside an atomic ensemble together with a proper Zeeman manifold in order to achieve a heralded polarization entangled Bell state. The entanglement is between two photons that are separated in time and can be used as a post selected deterministic source for applications such as quantum repeaters where a subsequent entanglement swapping measurement is employed. We present a detailed analysis of the practical limitation of the scheme.
6 pages, 5 figures