Środowiskowe Seminarium z Informacji i Technologii Kwantowych
sala 0.06, ul. Pasteura 5
2025-05-29 (11:15) 
Przemysław Dykowski (Institute of Geodesy and Cartography)
Can quantum sensors improve the way we measure Earth’s gravity?
Modern absolute gravity measurements are capable to achieve accuracies at the level of 10-9 g since late 1980s. The instruments most commonly used for gravity measurements operate on mechanical components, i.e. spring tensions or a prism free falling in a vacuum. This creates particular disadvantages in their robustness which potentially can be mitigated with emerging quantum sensors.
In the last two decades quantum sensors are being used for practical gravity measurements and since the last decade a commercial quantum sensor became available commercially to the scientific community, based on atom interferometry, the Absolute Quantum Gravimeter (AQG) manufactured by a French company, Exail. With its compact size, it is a very promising tool for measurements of Earth gravity field. Up to now 19 instruments have been manufactured and distributed worldwide.
Seminar will present aspects of Earth gravity field variations, effects that are taken into account in modern precise gravity measurements, currently available and used instrumentation along with requirements they need to meet as well as the pros and cons of introducing the quantum sensors to the scientific community. Finally results and plans for future research for the AQG-B07 quantum gravimeter (owned by IGiK) will be presented on the national and EU level.
In the last two decades quantum sensors are being used for practical gravity measurements and since the last decade a commercial quantum sensor became available commercially to the scientific community, based on atom interferometry, the Absolute Quantum Gravimeter (AQG) manufactured by a French company, Exail. With its compact size, it is a very promising tool for measurements of Earth gravity field. Up to now 19 instruments have been manufactured and distributed worldwide.
Seminar will present aspects of Earth gravity field variations, effects that are taken into account in modern precise gravity measurements, currently available and used instrumentation along with requirements they need to meet as well as the pros and cons of introducing the quantum sensors to the scientific community. Finally results and plans for future research for the AQG-B07 quantum gravimeter (owned by IGiK) will be presented on the national and EU level.