Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams

Abstract We demonstrate a technique for continuous tuning of the Hanle effect from electromagnetically induced transparency (EIT) to electromagnetically induced absorption (EIA) by changing the polarization ellipticity of a control beam. In contrast to previous work in this field, we use spatially s...

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Autores principales:	Mangesh Bhattarai, Vineet Bharti, Vasant Natarajan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/12af99b0044e454eb8636db3a3edbb06
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spelling	oai:doaj.org-article:12af99b0044e454eb8636db3a3edbb062021-12-02T16:07:52ZTuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams10.1038/s41598-018-25832-82045-2322https://doaj.org/article/12af99b0044e454eb8636db3a3edbb062018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25832-8https://doaj.org/toc/2045-2322Abstract We demonstrate a technique for continuous tuning of the Hanle effect from electromagnetically induced transparency (EIT) to electromagnetically induced absorption (EIA) by changing the polarization ellipticity of a control beam. In contrast to previous work in this field, we use spatially separated probe and control beams. The experiments are done using magnetic sublevels of the F g = 4 → F e = 5 closed hyperfine transition in the 852 nm D2 line of 133Cs. The atoms are contained in a room temperature vapor cell with anti-relaxation (paraffin) coating on the walls. The paraffin coating is necessary for the atomic coherence to be transported between the beams. The experimental results are supported by a density-matrix analysis of the system, which also explains the observed amplitude and zero-crossing of the resonances. Such continuous tuning of the sign of a resonance has important applications in quantum memory and other precision measurements.Mangesh BhattaraiVineet BhartiVasant NatarajanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mangesh Bhattarai Vineet Bharti Vasant Natarajan Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams
description	Abstract We demonstrate a technique for continuous tuning of the Hanle effect from electromagnetically induced transparency (EIT) to electromagnetically induced absorption (EIA) by changing the polarization ellipticity of a control beam. In contrast to previous work in this field, we use spatially separated probe and control beams. The experiments are done using magnetic sublevels of the F g = 4 → F e = 5 closed hyperfine transition in the 852 nm D2 line of 133Cs. The atoms are contained in a room temperature vapor cell with anti-relaxation (paraffin) coating on the walls. The paraffin coating is necessary for the atomic coherence to be transported between the beams. The experimental results are supported by a density-matrix analysis of the system, which also explains the observed amplitude and zero-crossing of the resonances. Such continuous tuning of the sign of a resonance has important applications in quantum memory and other precision measurements.
format	article
author	Mangesh Bhattarai Vineet Bharti Vasant Natarajan
author_facet	Mangesh Bhattarai Vineet Bharti Vasant Natarajan
author_sort	Mangesh Bhattarai
title	Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams
title_short	Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams
title_full	Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams
title_fullStr	Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams
title_full_unstemmed	Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams
title_sort	tuning of the hanle effect from eit to eia using spatially separated probe and control beams
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/12af99b0044e454eb8636db3a3edbb06
work_keys_str_mv	AT mangeshbhattarai tuningofthehanleeffectfromeittoeiausingspatiallyseparatedprobeandcontrolbeams AT vineetbharti tuningofthehanleeffectfromeittoeiausingspatiallyseparatedprobeandcontrolbeams AT vasantnatarajan tuningofthehanleeffectfromeittoeiausingspatiallyseparatedprobeandcontrolbeams
_version_	1718384639057330176

Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams

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