Slow light propagation and amplification via electromagnetically induced transparency and four-wave mixing in an optically dense atomic vapor

Abstract

We experimentally and theoretically analyze the propagation of weak signal field pulses under the conditions of electromagnetically induced transparency (EIT) in hot Rb vapor, and study the effects of resonant four-wave mixing (FWM). In particular, we demonstrate that in a double-$\Lambda$ system, formed by the strong control field with the weak resonant signal and a far-detuned Stokes field, both continuous-wave spectra and pulse propagation dynamics for the signal field depend strongly on the amplitude of the seeded Stokes field, and the effect is enhanced in optically dense atomic medium. We also show that the theory describing the coupled propagation of the signal and Stokes fields is in good agreement with the experimental observations.

7 pages, 5 figures, Conference Proceedings from PQE-2009. Uploaded new figure4

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• Universal Approach to Optimal Photon Storage in Atomic Media
• Interfacing Collective Atomic Excitations and Single Photons
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• Elimination of the Diffraction of Arbitrary Images Imprinted on Slow Light
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• Realization of Coherent Optically Dense Media via Buffer-Gas Cooling
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• Prospects for storage and retrieval of a quantum dot single photon in an ultracold ${}^{87}$Rb ensemble
• Controllable steep dispersion with gain in a four-level N-scheme with four-wave mixing
• Suppression of the four-wave mixing amplification via Raman absorption
• Probing degenerate two-level atomic media by coherent optical heterodyning
• Suppression of Four-Wave Mixing in Hot Rubidium Vapor Using Ladder Scheme Raman Absorption
• Characterizing micro-macro transitions with an atomic-vapor-based linear optical amplifier
• Optimal Strategies for Optical Quantum Memories Using Long-Lived Noble-Gas Spins