Entanglement of the orbital angular momentum states of the photons generated in a hot atomic ensemble
arXiv:0807.0130 · doi:10.1103/PhysRevA.78.053810
Abstract
Quantum protocols will be more efficient with high-dimensional entangled states. Photons carrying orbital angular momenta can be used to create a high-dimensional entangled state. In this paper we experimentally demonstrate the entanglement of the orbital angular momentum between the Stokes and anti-Stokes photons generated in a hot atomic ensemble using spontaneous four-wave-mixing. This experiment also suggests the existence of the entanglement concerned with spatial degrees of freedom between the hot atomic ensemble and the Stokes photon.
arXiv comment5 pages, 4 figures
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