Altin, Paul; Johnsson, Mattias; Negnevitsky, V; Dennis, Graham; Anderson, R P; Debs, John; Szigeti, Stuart; Bennetts, Shayne; McDonald, Gordon; Close, John; Robins, Nicholas
We present a precision gravimeter based on coherent Bragg diffraction of freely falling cold atoms. Traditionally, atomic gravimeters have used stimulated Raman transitions to separate clouds in momentum space by driving transitions between two internal atomic states. Bragg interferometers utilize only a single internal state, and can therefore be less susceptible to environmental perturbations. Here we show that atoms extracted from a magneto-optical trap using an accelerating optical lattice...[Show more]
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