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Stable three-axis nuclear-spin gyroscope in diamond.

Authors :
Ajoy, Ashok
Cappellaro, Paola
Source :
Physical Review A: Atomic, Molecular & Optical Physics. Dec2012, Vol. 86 Issue 6-A, p062104-1-062104-7. 7p.
Publication Year :
2012

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 14N 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-1)/√Hz mm3 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. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10502947
Volume :
86
Issue :
6-A
Database :
Academic Search Index
Journal :
Physical Review A: Atomic, Molecular & Optical Physics
Publication Type :
Periodical
Accession number :
85080956
Full Text :
https://doi.org/10.1103/PhysRevA.86.062104