dorsal/arxiv
View SchemaLaser-noise-induced correlations and anti-correlations in Electromagnetically Induced Transparency
| Authors | L. S. Cruz, D. Felinto, J. G. Aguirre Gómez, M. Martinelli, P. Valente, A. Lezama, P. Nussenzveig |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0611254 |
| URL | https://arxiv.org/abs/quant-ph/0611254 |
| DOI | 10.1140/epjd/e2006-00254-4 |
Abstract
High degrees of intensity correlation between two independent lasers were observed after propagation through a rubidium vapor cell in which they generate Electromagnetically Induced Transparency (EIT). As the optical field intensities are increased, the correlation changes sign (becoming anti-correlation). The experiment was performed in a room temperature rubidium cell, using two diode lasers tuned to the $^{85}$Rb $D_2$ line ($\lambda = 780$nm). The cross-correlation spectral function for the pump and probe fields is numerically obtained by modeling the temporal dynamics of both field phases as diffusing processes. We explored the dependence of the atomic response on the atom-field Rabi frequencies, optical detuning and Doppler width. The results show that resonant phase-noise to amplitude-noise conversion is at the origin of the observed signal and the change in sign for the correlation coefficient can be explained as a consequence of the competition between EIT and Raman resonance processes.
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"abstract": "High degrees of intensity correlation between two independent lasers were\nobserved after propagation through a rubidium vapor cell in which they generate\nElectromagnetically Induced Transparency (EIT). As the optical field\nintensities are increased, the correlation changes sign (becoming\nanti-correlation). The experiment was performed in a room temperature rubidium\ncell, using two diode lasers tuned to the $^{85}$Rb $D_2$ line ($\\lambda =\n780$nm). The cross-correlation spectral function for the pump and probe fields\nis numerically obtained by modeling the temporal dynamics of both field phases\nas diffusing processes. We explored the dependence of the atomic response on\nthe atom-field Rabi frequencies, optical detuning and Doppler width. The\nresults show that resonant phase-noise to amplitude-noise conversion is at the\norigin of the observed signal and the change in sign for the correlation\ncoefficient can be explained as a consequence of the competition between EIT\nand Raman resonance processes.",
"arxiv_id": "quant-ph/0611254",
"authors": [
"L. S. Cruz",
"D. Felinto",
"J. G. Aguirre G\u00f3mez",
"M. Martinelli",
"P. Valente",
"A. Lezama",
"P. Nussenzveig"
],
"categories": [
"quant-ph"
],
"doi": "10.1140/epjd/e2006-00254-4",
"title": "Laser-noise-induced correlations and anti-correlations in Electromagnetically Induced Transparency",
"url": "https://arxiv.org/abs/quant-ph/0611254"
},
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