Atom interferometry with trapped Fermi gases

Details Atom interferometry with trapped Fermi gases Atom interferometry with trapped Fermi gases

2004-02-12

arxiv.org/abs/cond-mat/0402328v1

Phys. Rev. Lett. 92, 230402 (2004)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.92.230402

We realize an interferometer with an atomic Fermi gas trapped in an optical lattice under the influence of gravity. The single-particle interference between the eigenstates of the lattice results in macroscopic Bloch oscillations of the sample. The absence of interactions between fermions allows a time-resolved study of many periods of the oscillations, leading to a sensitive determination of the acceleration of gravity. The experiment proves the superiorness of non interacting fermions with respect to bosons for precision interferometry, and offers a way for the measurement of forces with microscopic spatial resolution.

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