Noise spectroscopy in cold Rubidium atoms in EIT configuration
Using noise spectroscopy, we studied the correlations between two light beams with opposite circular polarization, coupling the transition F=2 -> F’=2 in ? EIT configuration, with cold atoms of Rubidium-85. In the spectrum of correlation we observed the transition from correlation to anti-cor...
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| Language: | Portuguese |
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Universidade Estadual de Campinas
2020
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| Online Access: | https://econtents.sbu.unicamp.br/eventos/index.php/phyproceedings/article/view/3249 |
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| author | Theophilo , Klara Rhaissa Burlamaqui |
| author_facet | Theophilo , Klara Rhaissa Burlamaqui |
| author_sort | Theophilo , Klara Rhaissa Burlamaqui |
| collection | Portal de Eventos Científicos da UNICAMP |
| container_reference | Physicae Proceedings; Vol. 1 No. 1 (2012): Proceedings XI Young Researchers Meeting |
| description | Using noise spectroscopy, we studied the correlations between two light beams with opposite circular polarization, coupling the transition F=2 -> F’=2 in ? EIT configuration, with cold atoms of Rubidium-85. In the spectrum of correlation we observed the transition from correlation to anti-correlation, off-resonance, when raising the potency of the beams.This transition is a consequence of the competition between four-wave mixing, which is responsible for the correlation regime, and the Stark effect that produces anti-correlation in the beams.In the spectra of mean signal of intensity and correlation, we observed that the EIT peak is free of potency broadening, which makes possible that the measure of coherence time be more precise in the condition of EIT. Using a EIT’s model for a system in ? configuration, we observed that the theoretical correlation spectra are in good accordance with the experimental data, considering the degenerescence of the hyperfine levels. Besides that, the model predicts the non-broadening of the correlation peak, showing the correlation as a characterization property more accurated than the mean signal of intensity. |
| first_indexed | 2025-10-08T13:49:18Z |
| format | Online |
| id | ojs-article-3249 |
| institution | Universidade Estadual de Campinas |
| issn | 2236-7535 |
| language | por |
| last_indexed | 2025-10-08T13:49:18Z |
| publishDate | 2020 |
| publisher | Universidade Estadual de Campinas |
| record_format | ojs |
| spelling | ojs-article-32492020-05-15T15:30:07Z Noise spectroscopy in cold Rubidium atoms in EIT configuration Theophilo , Klara Rhaissa Burlamaqui Spectroscopy Stark effect Using noise spectroscopy, we studied the correlations between two light beams with opposite circular polarization, coupling the transition F=2 -> F’=2 in ? EIT configuration, with cold atoms of Rubidium-85. In the spectrum of correlation we observed the transition from correlation to anti-correlation, off-resonance, when raising the potency of the beams.This transition is a consequence of the competition between four-wave mixing, which is responsible for the correlation regime, and the Stark effect that produces anti-correlation in the beams.In the spectra of mean signal of intensity and correlation, we observed that the EIT peak is free of potency broadening, which makes possible that the measure of coherence time be more precise in the condition of EIT. Using a EIT’s model for a system in ? configuration, we observed that the theoretical correlation spectra are in good accordance with the experimental data, considering the degenerescence of the hyperfine levels. Besides that, the model predicts the non-broadening of the correlation peak, showing the correlation as a characterization property more accurated than the mean signal of intensity. Universidade Estadual de Campinas 2020-05-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://econtents.sbu.unicamp.br/eventos/index.php/phyproceedings/article/view/3249 Physicae Proceedings; Vol. 1 No. 1 (2012): Proceedings XI Young Researchers Meeting Physicae Proceedings; v. 1 n. 1 (2012): Proceedings XI Young Researchers Meeting 2236-7535 por https://econtents.sbu.unicamp.br/eventos/index.php/phyproceedings/article/view/3249/3185 Copyright (c) 2012 Physicae |
| spellingShingle | Theophilo , Klara Rhaissa Burlamaqui Spectroscopy Stark effect Noise spectroscopy in cold Rubidium atoms in EIT configuration |
| title | Noise spectroscopy in cold Rubidium atoms in EIT configuration |
| title_full | Noise spectroscopy in cold Rubidium atoms in EIT configuration |
| title_fullStr | Noise spectroscopy in cold Rubidium atoms in EIT configuration |
| title_full_unstemmed | Noise spectroscopy in cold Rubidium atoms in EIT configuration |
| title_short | Noise spectroscopy in cold Rubidium atoms in EIT configuration |
| title_sort | noise spectroscopy in cold rubidium atoms in eit configuration |
| topic | Spectroscopy Stark effect |
| url | https://econtents.sbu.unicamp.br/eventos/index.php/phyproceedings/article/view/3249 |
| work_keys_str_mv | AT theophiloklararhaissaburlamaqui noisespectroscopyincoldrubidiumatomsineitconfiguration |
