2014/07/14 by Rakholia, Akash V., McGuinness, Hayden J., Biedermann, Grant W. · 1 citation
#Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Quantum Physics (quant-ph)
paper · doi:10.48550/arxiv.1407.3847
We demonstrate a dual-axis accelerometer and gyroscope atom interferometer, which forms the building blocks of a six-axis inertial measurement unit. By recapturing the atoms after the interferometer sequence, we maintain a large atom number at high data-rates of 50 to 100 measurements per second. Two cold ensembles are formed in trap zones located a few centimeters apart, and are launched toward one-another. During their ballistic trajectory, they are interrogated with a stimulated Raman sequence, detected, and recaptured in the opposing trap zone. We achieve sensitivities at μg / √(Hz) and μrad / s / √(Hz) levels, making this a compelling prospect for expanding the use of atom interferometer inertial sensors beyond benign laboratory environments.