Cold-atom Inertial Sensor without Deadtime
arXiv:1605.03869 · doi:10.1109/EFTF.2016.7477770
Abstract
We report the operation of a cold-atom inertial sensor in a joint interrogation scheme, where we simultaneously prepare a cold-atom source and operate an atom interferometer in order to eliminate dead times. Noise aliasing and dead times are consequences of the sequential operation which is intrinsic to cold-atom atom interferometers. Both phenomena have deleterious effects on the performance of these sensors. We show that our continuous operation improves the short-term sensitivity of atom interferometers, by demonstrating a record rotation sensitivity of nrad.s in a cold-atom gyroscope of cm Sagnac area. We also demonstrate a rotation stability of nrad.s after s of integration, improving previous results by an order of magnitude. We expect that the continuous operation will allow cold-atom inertial sensors with long interrogation time to reach their full sensitivity, determined by the quantum noise limit.
presented at EFTF 2016, manuscripted prepared for the proceeding of EFTF
References in corpus (17)
- Implementation of Cavity Squeezing of a Collective Atomic Spin
- Detecting inertial effects with airborne matter-wave interferometry
- 6-axis inertial sensor using cold-atom interferometry
- An Atomic Gravitational Wave Interferometric Sensor (AGIS)
- Long-Term Stability of an Area-Reversible Atom-Interferometer Sagnac Gyroscope
- Characterization and limits of a cold atom Sagnac interferometer
- Quantum Tests of the Einstein Equivalence Principle with the STE-QUEST Space Mission
- Stability comparison of two absolute gravimeters: optical versus atomic interferometers
- Large Momentum Beamsplitter using Bloch Oscillations
- Measurement of the Gravity-Field Curvature by Atom Interferometry
- The Sagnac effect: 20 years of development in matter-wave interferometry
- Cold atom gravimetry with a Bose-Einstein Condensate
- Hybridizing matter-wave and classical accelerometers
- Low Frequency Gravitational Wave Detection With Ground Based Atom Interferometer Arrays
- Phase locking a clock oscillator to a coherent atomic ensemble
- Stability enhancement by joint phase measurements in a single cold atomic fountain
- Matter-wave laser Interferometric Gravitation Antenna (MIGA): New perspectives for fundamental physics and geosciences