dorsal/arxiv
View SchemaLarge negative and positive delay of optical pulses in coherently prepared dense Rb vapor with buffer gas
| Authors | Eugeniy E. Mikhailov, Vladimir A. Sautenkov, Irina Novikova, George R. Welch |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0402120 |
| URL | https://arxiv.org/abs/quant-ph/0402120 |
| DOI | 10.1103/PhysRevA.69.063808 |
| Journal | Phys. Rev. A 69, 063808 (2004) |
Abstract
We 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 $\Lambda$ 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.
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"abstract": "We experimentally study the group time delay for a light pulse propagating\nthrough hot Rb vapor in the presence of a strong coupling field in a $\\Lambda$\nconfiguration. We demonstrate that the ultra-slow pulse propagation is\ntransformed into superluminal propagation as the one-photon detuning of the\nlight increases due to the change in the transmission resonance lineshape.\nNegative group velocity as low as -c/10^6=-80 m/s is recorded. We also find\nthat the advance time in the regime of the superluminal propagation grows\nlinearly with increasing laser field power.",
"arxiv_id": "quant-ph/0402120",
"authors": [
"Eugeniy E. Mikhailov",
"Vladimir A. Sautenkov",
"Irina Novikova",
"George R. Welch"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.69.063808",
"journal_ref": "Phys. Rev. A 69, 063808 (2004)",
"title": "Large negative and positive delay of optical pulses in coherently prepared dense Rb vapor with buffer gas",
"url": "https://arxiv.org/abs/quant-ph/0402120"
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