A precise measurement of h/m Rb using Bloch oscillations in a vertical optical lattice: determination of the fine structure constant
نویسندگان
چکیده
منابع مشابه
Determination of the fine structure constant with atom interferometry and Bloch oscillations
The fine structure constant α sets the scale of the electromagnetic interaction so it can be determined in different domains of physics. As α is dimensionless, it does not depend on any unit system. Hence this allows the comparison of various accurate determinations which constitutes an interesting test of the consistency of physics. The most precise determination of α comes from the measuremen...
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We use Bloch oscillations to transfer coherently many photon momenta to atoms. Then we can measure accurately the ratio h/mRb and deduce the fine structure constant α. 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...
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