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We report on the experimental demonstration of a horizontal accelerometerbased on atom interferometry using counterpropagative Raman transitions betweenthe states $F=1,m_F=\mp1$ and $F=2,m_F=\pm1$ of $^{87}$Rb. Compared to the$F=1,m_F=0 \leftrightarrow F=2,m_F=0$ transition usually used in atominterferometry, our scheme presents the advantages to have only a singlecounterpropagating transition allowed in a retroreected geometry, to use thesame polarization configuration than the magneto-optical trap and to allow thecontrol of the atom trajectory with magnetic forces. We demonstrate horizontalacceleration measurement in a close-to-zero velocity regime using asinglediffraction Raman process with a short-term sensitivity of $25 \times10^{-5}$ m.s$^{-2}$.Hz$^{-1/2}$. We discuss specific features of the techniquesuch as spontaneous emission, light-shifts and effects of magnetic fieldinhomogeneities. We finally give possible applications of this technique inmetrology or for cold-atom inertial sensors dedicated to onboard applications.

Atom interferometry using $\sigma^+$-$\sigma^-$ Raman transitions between $F=1,m_F=\mp1$ and $F=2,m_F=\pm1$