R. Geiger

Continuous Cold-Atom Inertial Sensor with 1 nrad/sec Rotation Stability

We report the operation of a cold-atom inertial sensor which continuously captures the rotation signal. Using a joint interrogation scheme, where we simultaneously prepare a cold-atom source and operate an atom interferometer (AI), enables us to eliminate the dead times. We show that such continuous operation improves the short-term sensitivity of AIs, and demonstrate a rotation sensitivity of 100u2009u2009nrad/sec/sqrt[Hz] in a cold-atom gyroscope of 11u2009u2009cm^{2} Sagnac area. We also demonstrate a rotation stability of 1u2009u2009nrad/sec at 10^{4}u2009u2009sec of integration time, which represents the state of the art for atomic gyroscopes. The continuous operation of cold-atom inertial sensors will lead to large area AIs at their full sensitivity potential, determined by the quantum noise limit.

Low frequency gravitational wave detection with ground-based atom interferometer arrays

We propose a new detection strategy for gravitational waves (GWs) below few Hertz based on a correlated array of atom interferometers (AIs). nOur proposal allows to reject the Newtonian Noise (NN) which limits all ground based GW detectors below few Hertz, including previous atom interferometry-based concepts. nUsing an array of long baseline AI gradiometers yields several estimations of the NN, whose effect can thus be reduced via statistical averaging. nConsidering the km baseline of current optical detectors, a NN rejection of factor 2 could be achieved, and tested with existing AI array geometries. nExploiting the correlation properties of the gravity acceleration noise, we show that a 10-fold or more NN rejection is possible with a dedicated configuration. nConsidering a conservative NN model and the current developments in cold atom technology, we show that strain sensitivities below

Stability enhancement by joint phase measurements in a single cold atomic fountain

1times 10^{-19}/sqrt{Hz}

Metrology with Atom Interferometry: Inertial Sensors from Laboratory to Field Applications

in the

A marginally stable optical resonator for enhanced atom interferometry

0.3-3 Hz

High-sensitivity cold-atom gyroscope with real-time vibration compensation

frequency band can be within reach, with a peak sensitivity of

A large mode optical resonator for enhanced atom interferometry

3times 10^{-23} /sqrt{Hz}

High resolution atom interferometry with optical resonators

at

Interleaved Atom Interferometry for High Sensitivity Inertial Measurements

2 Hz

Cold-atom inertial sensor without deadtime

. nOur proposed configuration could extend the observation window of current detectors by a decade and fill the gap between nground-based and space-based instruments.