Hybrid atomic gyroscope
Lead Research Organisation:
University of Nottingham
Department Name: Sch of Physics & Astronomy
Abstract
This project develops a sensor to detect rotations using quantum technology. Such sensors, together with acceleration sensors, form key components in inertial navigation systems that allow for self-tracking of ships, aircraft and other vehicles even when other means of determining their position may break down, such as a failing GPS signal. Rotation sensors track the vehicles orientation and are used e.g. for the stabilisation of drones. However, in order to track over long times, very high precision (low noise) and high accuracy (true rotation rates) are necessary such that accumulating errors do not invalidate the inferred position and orientation. Quantum sensors based on the interference of matter waves promise to deliver just that, but as stand-alone sensors, their data rates are too slow to allow for navigation. In this project, we explore the combination of two different atomic sensors: an ultra-cold atom gyroscope that can be very accurate with a nuclear magnetic resonance gyroscope that can be sufficiently precise and fast.
The research work will address the principles of the quantum measurements as well as miniaturization and ruggedization of such sensors, reducing a range of electronic and mechanical overhead from a typical laboratory setup. A theoretical analysis will determine how the data can be best combined to deliver optimal measurement results for the hybrid gyroscope system.
The research work will address the principles of the quantum measurements as well as miniaturization and ruggedization of such sensors, reducing a range of electronic and mechanical overhead from a typical laboratory setup. A theoretical analysis will determine how the data can be best combined to deliver optimal measurement results for the hybrid gyroscope system.
Publications
Akbar A
(2024)
Optimized detection modality for radio-frequency sensing with a double-resonance alignment magnetometer
in Physical Review Applied
Kozbial M
(2024)
Spin noise spectroscopy of an alignment-based atomic magnetometer
in Physical Review A
| Description | In this project, we investigate methods to build and combine atomic gyroscopes with different dynamic ranges, data rates, accuracy and precision. Fast, high-dynamic range gyroscopes can be built with mixtures of alkali metal vapour with the noble gas xenon, where the alkali metal is used as a means to prepare and observe the nuclear spin of xenon atoms, which provides an inertial reference frame. The goal is to combine the performance of such a gyroscope with the potentially high accuracy of an atomic matterwave interferometer. Our work so far has concentrated on underlying methods. We have improved means to use magnetometric measurements for the real-time observation of nuclear spins. For the matterwave interferometer, we have been able to improve coherence times of quantum mechanical superpositions by exposing atoms to specifically tailored microwave frequencies. |
| Exploitation Route | Our methods might be used by others to improve atomic magnetometers and other devices where quantum mechanical coherence of atomic states plays a role. |
| Sectors | Aerospace Defence and Marine |
