Cold-atom inertial sensor without deadtime

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 intrinsi...

Full description

Saved in:
Bibliographic Details
Published in2016 European Frequency and Time Forum (EFTF) pp. 1 - 4
Main Authors Fang, B., Dutta, I., Savoie, D., Venon, B., Garrido Alzar, C. L., Geiger, R., Landragin, A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2016
Subjects
Artificial intelligence
Atomic measurements
Gyroscopes
Laser stability
Sagnac interferometers
Sensitivity
Vibrations
Online AccessGet full text

Cover

More Information
Summary: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 100 nrad.s -1 /√(Hz) in a cold-atom gyroscope of 11 cm 2 Sagnac area. We also demonstrate a rotation stability of 1 nrad.s -1 after 10 4 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.
DOI:10.1109/EFTF.2016.7477770