High visibility gravimetry with a Bose-Einstein condensate
نویسندگان
چکیده
A Bose-Einstein condensate (BEC) is frequently described as the matter-wave analog of an optical laser – the preferred source for optical interferometry. In this project, we have demonstrated an atom interferometer-based gravimeter using a Rb Bose-condensed source [1]. Our data represent the highest fringe visibility yet achieved in such a device (Fig. 1), for both standard, and large-momentum-transfer (LMT) beamsplitting using Bloch oscillations [2, 3], leading to a precision of 17ppm. Furthermore, we have shown explicitly that replacing a thermal source with a BEC leads to a significant increase in visibility (Fig. 1).
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