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Tracking the vector acceleration with a hybrid quantum accelerometer triad
Simon Templier1,2, Pierrick Cheiney1, Quentin d'Armagnac de Castanet1,2
1iXblue, 34 Rue de la Croix de Fer, 78105 Saint-Germain-en-Laye, France.
Science Advances
|November 9, 2022
Summary
This study introduces a hybrid quantum accelerometer for precise acceleration vector tracking. This novel sensor offers a 50-fold stability improvement, crucial for geophysics and navigation.
Area of Science:
- Quantum physics
- Geophysics
- Inertial navigation
Background:
- Accurate acceleration tracking is vital for geophysics and economic geology, particularly for precise gravity mapping.
- Current inertial sensors face limitations in precision and vector measurement, necessitating advancements for applications like navigation.
Purpose of the Study:
- To present the first hybrid three-axis accelerometer combining quantum and classical sensing technologies.
- To overcome the limitations of scalar quantum sensors by enabling full acceleration vector measurement.
Main Methods:
- Integration of three orthogonal atom interferometer measurements with a classical navigation-grade accelerometer triad.
- Utilizing the quantum advantage for ultralow bias and high-stability acceleration vector tracking.
Main Results:
- Achieved a 50-fold improvement in stability (6 × 10-8 g) compared to classical accelerometers.
- Recorded acceleration vector data at 1 kHz with <10 μg magnitude accuracy and 4 μrad pointing accuracy.
Conclusions:
- The developed hybrid accelerometer demonstrates significant advancements for long-term acceleration vector tracking.
- This technology paves the way for future strapdown applications and enhanced inertial navigation units utilizing quantum sensors.
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