Large negative and positive delay of optical pulses in coherently prepared dense Rb vapor with buffer gas

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dc.creatorMikhailov, Eugeniy E.
dc.creatorSautenkov, Vladimir A.
dc.creatorNovikova, Irina
dc.creatorWelch, George R.
dc.date2004-02-18
dc.date.accessioned2026-07-07T06:09:01Z
dc.date.available2026-07-07T06:09:01Z
dc.descriptionWe experimentally study the group time delay for a light pulse propagating through hot Rb vapor in the presence of a strong coupling field in a $Λ$ configuration. We demonstrate that the ultra-slow pulse propagation is transformed into superluminal propagation as the one-photon detuning of the light increases due to the change in the transmission resonance lineshape. Negative group velocity as low as -c/10^6=-80 m/s is recorded. We also find that the advance time in the regime of the superluminal propagation grows linearly with increasing laser field power.
dc.description5 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0402120
dc.identifierhttp://arxiv.org/abs/quant-ph/0402120
dc.identifierPhys. Rev. A 69, 063808 (2004)
dc.identifierdoi:10.1103/PhysRevA.69.063808
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/91832
dc.subjectQuantum Physics
dc.titleLarge negative and positive delay of optical pulses in coherently prepared dense Rb vapor with buffer gas
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