Determination of the Fine Structure Constant Based on Bloch Oscillations of Ultracold Atoms in a Vertical Optical Lattice | Zendy

Pierre Cladé | Zendy; E. de Mirandes | Zendy; Malo Cadoret | Zendy; Saïda Guellati-Khélifa | Zendy; Catherine Schwob | Zendy; F. Nez | Zendy; L. Julién | Zendy; F. Biraben | Zendy

Open Access

Determination of the Fine Structure Constant Based on Bloch Oscillations of Ultracold Atoms in a Vertical Optical Lattice

Author(s) -

Pierre Cladé,

E. de Mirandes,

Malo Cadoret,

Saïda Guellati-Khélifa,

Catherine Schwob,

F. Nez,

L. Julién,

F. Biraben

Publication year - 2006

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.96.033001

Subject(s) - recoil , physics , lattice constant , optical lattice , atomic physics , lattice (music) , systematic error , condensed matter physics , optics , statistics , diffraction , superfluidity , acoustics , mathematics

We report an accurate measurement of the recoil velocity of Rb atoms based onBloch oscillations in a vertical accelerated optical lattice. We transfer about900 recoil momenta with an efficiency of 99.97 % per recoil. A set of 72measurements of the recoil velocity, each one with a relative uncertainty ofabout 33 ppb in 20 min integration time, leads to a determination of the finestructure constant alpha with a statistical relative uncertainty of 4.4 ppb.The detailed analysis of the different systematic errors yields to a relativeuncertainty of 6.7 ppb. The deduced value of 1/alpha is 137.03599878(91)

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