Atom interferometry with trapped Fermi gases

Year: 2004

Authors: Roati G., de Mirandes E., Ferlaino F., Ott H., Modugno G., Inguscio M.

Autors Affiliation: LENS and Dipartimento di Fisica, Universita` di Firenze, and INFM, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy

Abstract: 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 superiority of noninteracting fermions with respect to bosons for precision interferometry and offers a way for the measurement of forces with microscopic spatial resolution.


Volume: 92 (23)      Pages from: 230402-1  to: 230402-4

KeyWords: Fermi gases

Citations: 134
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