Dynamic quantization axis control method and apparatus for multi-axis inertial measurement

By employing a pulsed dynamic quantum axis control method and anti-adiabatic compensation technology, the problems of large system size and large error in multi-axis inertial measurement have been solved, enabling fast and stable multi-directional inertial measurement, which is suitable for high-precision inertial navigation and geophysical exploration.

CN121804467BActive Publication Date: 2026-06-05INNOVATION ACAD FOR PRECISION MEASUREMENT SCI & TECH CAS +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INNOVATION ACAD FOR PRECISION MEASUREMENT SCI & TECH CAS
Filing Date
2026-03-12
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing atomic interferometers in multi-axis inertial measurement suffer from large system size, complex structure, and high cost. Furthermore, asynchronous measurements in dynamic application scenarios introduce errors, making it difficult to achieve rapid switching of quantum axes without compromising coherence.

Method used

By employing a pulsed dynamic quantum axis control method, a cross-interference loop is constructed by combining pulsed magnetic fields and optical fields. The magnetic field direction is rotated within hundreds of microseconds using adiabatic shortcuts and anti-adiabatic field compensation techniques, suppressing non-adiabatic transitions, and thus constructing a single-cavity dual-axis atomic interferometer.

Benefits of technology

It enables rapid switching of multi-directional bias magnetic fields, reduces system size and complexity, avoids mechanical misalignment errors, ensures the stability and reliability of inertial vector output, improves interference contrast and coherence lifetime, and is suitable for high-speed dynamic environments.

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Abstract

The application discloses a dynamic quantization axis control device for multi-axis inertial measurement, comprising an interference cavity, one atom source is arranged at each end of the interference cavity, two orthogonal laser groups and three pairs of mutually orthogonal Helmholtz coils are arranged outside the interference cavity. The application also discloses a dynamic quantization axis control method for multi-axis inertial measurement, according to a preset axis distribution time sequence, the atom source continuously emits cold atom groups to the interference cavity, the magnetic field generated by the Helmholtz coils and the start-stop of the laser groups are periodically switched, so that the quasi-synchronous measurement of two-axis inertial quantities is realized. The application can be quickly expanded to full-vector inertial measurement. By introducing a fast adiabatic shortcut magnetic field pulse rotation, using three-axis orthogonal magnetic field waveform control and anti-adiabatic compensation field design, the magnetic field direction switching is completed in sub-millisecond level, at the same time, the atom spin adiabatic follow-up quantum axis is ensured, the non-adiabatic transition and Zeeman phase shift accumulation are effectively inhibited, and the interference contrast and phase stability are ensured.
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