期刊
PHYSICAL REVIEW LETTERS
卷 101, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.230801
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资金
- Laboratoire National de Metrologie et d'Essais [033006]
- IFRAF (Institut Francilien de Recherches sur les Atomes Froids)
- Agence Nationale pour la Recherche
- FISCOM [ANR-06-BLAN-0192]
- Agence Nationale de la Recherche (ANR) [ANR-06-BLAN-0192] Funding Source: Agence Nationale de la Recherche (ANR)
We report a new experimental scheme which combines atom interferometry with Bloch oscillations to provide a new measurement of the ratio h/m(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(Rb) leads to a new determination of the fine structure constant alpha(-1)=137.035 999 45 (62) with a relative uncertainty of 4.6x10(-9). The comparison of this result with the value deduced from the measurement of the electron anomaly provides the most stringent test of QED.
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