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The accuracy and precision of current atom-interferometric inertialsensorsrival state-of-the-art conventional devices using artifact-based test masses .Atomic sensors are well suited for fundamental measurements of gravito-inertialfields. The sensitivity required to test gravitational theories can be achievedby extending the baseline of the interferometer. The I.C.E.(Interf\'erom\'etrie Coh\'erente pour l'Espace) interferometer aims to achievelong interrogation times in compact apparatus via reduced gravity. We havetested a cold-atom source during airplane parabolic flights. We show that thisenvironment is compatible with free-fall interferometric measurements using upto 4 second interrogation time. We present the next-generation apparatus usingdegenerate gases for low release-velocity atomic sources in space-borneexperiments.

I.C.E.: An Ultra-Cold Atom Source for Long-Baseline Interferometric Inertial Sensors in Reduced Gravity