Stable three-axis nuclear-spin gyroscope in diamond
Name
Ajoy-2012-Stable three-axis nuclear-spin gyroscope in diamond.pdf
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Author(s)
Ajoy, Ashok
Cappellaro, Paola
Date Issued
December 2012
Journal
Physical Review A
Publisher
American Physical Society
Citation
Ajoy, Ashok, and Paola Cappellaro. “Stable Three-axis Nuclear-spin Gyroscope in Diamond.” Physical Review A 86.6 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
Gyroscopes find wide applications in everyday life from navigation and inertial sensing to rotation sensors in hand-held devices and automobiles. Current devices, based on either atomic or solid-state systems, impose a choice between long-time stability and high sensitivity in a miniaturized system. Here, we introduce a quantum sensor that overcomes these limitations by providing a sensitive and stable three-axis gyroscope in the solid state. We achieve high sensitivity by exploiting the long coherence time of the [superscript 14]N nuclear spin associated with the nitrogen-vacancy center in diamond, combined with the efficient polarization and measurement of its electronic spin. Although the gyroscope is based on a simple Ramsey interferometry scheme, we use coherent control of the quantum sensor to improve its coherence time and robustness against long-time drifts. Such a sensor can achieve a sensitivity of η~0.5 (mdeg s[superscript −1)/[√ over Hz mm[superscript 3]] while offering enhanced stability in a small footprint. In addition, we exploit the four axes of delocalization of the nitrogen-vacancy center to measure not only the rate of rotation, but also its direction, thus obtaining a compact three-axis gyroscope.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Research Laboratory of Electronics
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DOI of Published Version
https://doi.org/10.1103/PhysRevA.86.062104
