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Rabi interferometry and sensitive measurement of the Casimir-Polder force with ultracold gases (Articolo in rivista)

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Rabi interferometry and sensitive measurement of the Casimir-Polder force with ultracold gases (Articolo in rivista) (literal)

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Chwedeczuk J., Pezzé L., Piazza F., Smerzi A. (2010)
Rabi interferometry and sensitive measurement of the Casimir-Polder force with ultracold gases
in Physical review. A
(literal)

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BEC-CNR-INFM and Dipartimento di Fisica, Università di Trento, I-38050 Povo, Italy; Laboratoire Charles Fabry de l'Institut d'Optique, CNRS and Univ. Paris-Sud, Campus Polytechnique, RD 128, F-91127 Palaiseau cedex, France (literal)

Titolo

Rabi interferometry and sensitive measurement of the Casimir-Polder force with ultracold gases (literal)

Abstract

We show that Rabi oscillations of a degenerate fermionic or bosonic gas trapped in a double-well potential can be exploited for the interferometric measurement of external forces at micrometer length scales. The Rabi interferometer is less sensitive but easier to implement than the Mach-Zehnder, since it does not require dynamical beam-splitting or recombination processes. As an application we propose a measurement of the Casimir-Polder force acting between the atoms and a dielectric surface. We find that even if the interferometer is fed with a coherent state of relatively small number of atoms, and in the presence of realistic experimental noise, the force might be measured with a sensitivity sufficient to discriminate between thermal and zero-temperature regimes of the Casimir-Polder potential. Higher sensitivities can be reached with bosonic spin squeezed states. (literal)

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