Collapses and revivals of stored orbital angular momentum of light in a cold atomic ensemble

Details Collapses and revivals of stored orbital angular momentum of light in a cold atomic ensemble Collapses and revivals of stored orbital angular momentum of light in a cold atomic ensemble

2009-01-07

arxiv.org/abs/0901.0939v1

Physical Review A, 79, 023825 (2009)

Physics

Quantum Physics

Submitted to Physical Review A

Scientific paper

10.1103/PhysRevA.79.023825

We report on the storage of orbital angular momentum of light in a cold ensemble of cesium atoms. We employ Bragg diffraction to retrieve the stored optical information impressed into the atomic coherence by the incident light fields. The stored information can be manipulated by an applied magnetic field and we were able to observe collapses and revivals due to the rotation of the stored atomic Zeeman coherence for times longer than 15 $\mu s$.

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