Nonvolatile optical memory via recoil-induced resonance in a pure two-level system

Abstract

We report on the storage of light via the phenomenon of recoil-induced resonance in a pure two- level system of cold cesium atoms. We use a strong coupling beam and a weak probe beam to couple different external momentum states of the cesium atom via two-photon Raman interaction which leads to the storage of the optical information of the probe beam. We have also measured the probe transmission spectrum, as well as the light storage spectrum which reveals very narrow subnatural resonance features showing absorption and gain. We have demonstrated that this memory presents the unique property of being insensitive to the reading process, which does not destroy the stored information leading to a memory lifetime limited only by the atomic thermal motion.

arXiv comment5 pages, 5 figures. To appear in Physical Review A

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Cited by in corpus (4)

• Observation of nonclassical correlations in biphotons generated from an ensemble of pure two-level atoms
• Experimental Fock-State Superradiance
• Fock-state superradiance in a cold atomic ensemble
• Continuous variable entanglement in a cold-atoms mirrorless optical parametric oscillator