  Interferometers based on ultra-cold atoms enable an absolute measurement of
inertial forces with unprecedented precision. However, their resolution is
fundamentally restricted by quantum fluctuations. Improved resolutions with
entangled or squeezed atoms were demonstrated in internal-state measurements
for thermal and quantum-degenerate atoms and, recently, for momentum-state
interferometers with laser-cooled atoms. Here, we present a gravimeter based on
Bose-Einstein condensates with a sensitivity of $-1.7^{+0.4}_{-0.5}\,$dB beyond
the standard quantum limit. Interferometry with Bose-Einstein condensates
combined with delta-kick collimation minimizes atom loss in and improves
scalability of the interferometer to very-long baseline atom interferometers.
