![\"New](\"https:\/\/www.europesays.com\/us\/wp-content\/uploads\/2025\/08\/new-measurement-statio.jpg\" "\\"GNOME")
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GNOME measurement station at Leibniz IPHT in Jena: Dr. Theo Scholtes (left) and G\u00f6ran Hellmann adjust a quantum magnetometer used in the search for traces of dark matter. In continuous operation, it sends measurement data to the GNOME server. Credit: Sven D\u00f6ring<\/p>\n
A highly sensitive quantum sensor from Jena has traveled nearly 9,000 kilometers: by truck to Hamburg, by ship across the Atlantic, and finally overland to Vassouras, Brazil.<\/p>\n
At the campus of the Observat\u00f3rio Nacional, researchers from the Leibniz Institute of Photonic Technology (Leibniz-IPHT) in Jena, together with Brazilian partners, have installed a new measurement station. It is part of the worldwide GNOME project<\/a> and is designed to help address one of the great unsolved questions in modern physics: the nature of dark matter<\/a>.<\/p>\n Dark matter cannot be directly detected with conventional measurement methods. However, it demonstrably influences the motion of galaxies and the structure of the cosmos. Understanding its nature remains one of the central open problems in physics.<\/p>\n The international GNOME collaboration (Global Network of Optical Magnetometers for Exotic physics searches) specifically looks for signs of hypothetical particles\u2014among them so-called axions\u2014that might interact with atoms inside magnetometers.<\/p>\n “Our station is based on an optically pumped magnetometer, in which we use laser light<\/a> to drive cesium atoms<\/a> into specific quantum states,” explains Dr. Theo Scholtes, physicist at Leibniz-IPHT. “If this state changes\u2014for example, due to a passing dark-matter field\u2014we can measure it with high precision.”<\/p>\n The sensor’s technology\u2014including magnetic shielding, laser stabilization, and system control\u2014was developed, built, and tested at Leibniz-IPHT in Jena.<\/p>\n The new GNOME station in Brazil is the first permanently operating station of the network in the Southern Hemisphere. This geographical expansion is of particular significance for the project. “With the station in Vassouras, we improve our ability to triangulate potential events\u2014that is, to determine their origin more precisely by comparing signals from multiple stations. The principle is similar to how gravitational waves<\/a> are detected,” says Theo Scholtes.<\/p>\n \n\t\t\t\t\t\t\t\t\t\t\t\t\tProvided by \t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n \n\t\t\t\t\t\t\t\t\t\t\t\tCitation<\/strong>: \n\t\t\t\t\t\t\t\t\t\t\t This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tLeibniz Institute of Photonic Technology<\/a>
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\n\t\t\t\t\t\t\t\t\t\t\t\tNew measurement station in Brazil: Quantum technology expands global network in search for dark matter (2025, August 22)
\n\t\t\t\t\t\t\t\t\t\t\t\tretrieved 23 August 2025
\n\t\t\t\t\t\t\t\t\t\t\t\tfrom https:\/\/phys.org\/news\/2025-08-station-brazil-quantum-technology-global.html\n\t\t\t\t\t\t\t\t\t\t\t <\/p>\n
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