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We report a new experimental scheme which combines atom interferometry with Bloch oscillations to provide a new measurement of the ratio h/mₑ₁. 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/mₑ₁ leads to a new determination of the fine structure constant ^-1=137. 035 999 45 (62) with a relative uncertainty of 4. 610^-9. The comparison of this result with the value deduced from the measurement of the electron anomaly provides the most stringent test of QED.
Cadoret et al. (Wed,) studied this question.