Combination of Bloch oscillations with a Ramsey-Bordé interferometer : new determination of 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.date2008-10-17
dc.date.accessioned2026-07-07T12:15:52Z
dc.date.available2026-07-07T12:15:52Z
dc.descriptionWe report a new experimental scheme which combines atom interferometry with Bloch oscillations to provide a new measurement of the ratio $h/m_{\mathrm{Rb}}$. By using Bloch oscillations, we impart to the atoms up to 1600 recoil momenta and thus we improve the accuracy on the recoil velocity measurement. The deduced value of $h/m_{\mathrm{Rb}}$ leads to a new determination of the fine structure constant $α^{-1}=137.035 999 45 (62)$ with a relative uncertainty of $4.6\times 10^{-9}$. The comparison of this result with the value deduced from the measurement of the electron anomaly provides the most stringent test of QED.
dc.identifierhttps://arxiv.org/abs/0810.3152
dc.identifierhttp://arxiv.org/abs/0810.3152
dc.identifierPhys.Rev.Lett.101:230801,2008
dc.identifierdoi:10.1103/PhysRevLett.101.230801
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211621
dc.subjectAtomic Physics
dc.titleCombination of Bloch oscillations with a Ramsey-Bordé interferometer : new determination of the fine structure constant
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