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arXiv · 0807.0130

Entanglement of the orbital angular momentum states of the photons generated in a hot atomic ensemble

Qun-Feng Chen·Bao-Sen Shi·Yong-Sheng Zhang·Guang-Can Guo
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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.

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Qun-Feng Chen, Bao-Sen Shi, Yong-Sheng Zhang, Guang-Can Guo. 2008-07-01. Entanglement of the orbital angular momentum states of the photons generated in a hot atomic ensemble. https://doi.org/10.1103/physreva.78.053810

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