@article{2011-poli-tino-phys-rev-lett-v106-p038501, Abstract = {

We report on a precision measurement of gravitational acceleration using ultracold strontium atoms confined in an amplitude-modulated vertical optical lattice. An uncertainty Δg/g≈10-7 is reached by measuring at the 5th harmonic of the Bloch frequency. The value obtained with this microscopic quantum system is consistent with the one measured with a classical gravimeter. Using lattice modulation to prepare the atomic sample, we also achieve high visibility of Bloch oscillations for ∼20  s. These results can be of relevance for testing gravitational redshift and Newtonian law at micrometer scale.

}, Author = {Poli, N. AND Wang, F. AND Tarallo, M. G. AND Alberti, A. AND Prevedelli, M. AND Tino, G. M.}, Journal = {Phys. Rev. Lett.}, Pages = {038501}, Title = {{Precision Measurement of Gravity with Cold Atoms in an Optical Lattice and Comparison with a Classical Gravimeter}}, Volume = {106}, Year = {2011} }