Precise determination of h/m_Rb using Bloch oscillations and atomic interferometry: a mean to deduce the fine structure constant

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dc.creatorCadoret, Malo
dc.creatorDe Mirandes, Estefania
dc.creatorCladé, Pierre
dc.creatorGuellati-Khélifa, Saïda
dc.creatorSchwob, Catherine
dc.creatorNez, François
dc.creatorJulien, Lucile
dc.creatorBiraben, François
dc.date2008-09-18
dc.date.accessioned2026-07-07T10:13:11Z
dc.date.available2026-07-07T10:13:11Z
dc.descriptionWe use Bloch oscillations to transfer coherently many photon momenta to atoms. Then we can measure accurately the ratio h/m_Rb and deduce the fine structure constant alpha. The velocity variation due to the Bloch oscillations is measured thanks to Raman transitions. In a first experiment, two Raman $π$ pulses are used to select and measure a very narrow velocity class. This method yields to a value of the fine structure constant alpha^{-1}= 137.035 998 84 (91) with a relative uncertainty of about 6.6 ppb. More recently we use an atomic interferometer consisting in two pairs of pi/2 pulses. We present here the first results obtained with this method.
dc.identifierhttps://arxiv.org/abs/0809.3167
dc.identifierhttp://arxiv.org/abs/0809.3167
dc.identifierThe European Physical Journal Special Topics 163 (2008) 101
dc.identifierdoi:10.1140/epjst/e2008-00813-9
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/172442
dc.subjectAtomic Physics
dc.titlePrecise determination of h/m_Rb using Bloch oscillations and atomic interferometry: a mean to deduce the fine structure constant
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