  The sensitivity of light and matter-wave interferometers to rotations is
based on the Sagnac effect and increases with the area enclosed by the
interferometer. In the case of light, the latter can be enlarged by forming
multiple fibre loops, whereas the equivalent for matter-wave interferometers
remains an experimental challenge. We present a concept for a multi-loop atom
interferometer with a scalable area formed by light pulses. Our method will
offer sensitivities as high as $2\cdot10^{-11}$ rad/s at 1 s in combination
with the respective long-term stability as required for Earth rotation
monitoring.
