Argonne is building diamond quantum sensors to measure magnetic fields for particle physics experiments

[Kayla73]

Argonne National Laboratory has launched a three year. 1 million dollar project combining quantum information science and high energy physics to build a new generation of diamond based quantum sensors capable of measuring electromagnetic fields with unprecedented precision, funded by the Department of Energy's Office of High Energy Physics.

The project centers on nitrogen vacancy centers, tiny defects created when a nitrogen atom sits next to a missing carbon atom inside a diamond crystal. These defects behave like a tiny trapped magnet with distinct energy states that shift in response to magnetic and electric fields, and researchers use light and microwaves to read that information out, giving the sensors extraordinary sensitivity.

Project lead Peter Winter explained the actual motivating problem plainly, a lot of high energy physics experiments depend on strong magnetic fields for various purposes, and many have strict requirements for mapping those fields with high precision, whether that's tracking particles emerging from a collision or measuring subtle changes in particle motion inside a magnetic storage ring. Even tiny uncertainties in understanding the surrounding electromagnetic environment can limit how precise an experiment's actual results can be.

Co-lead Nazar Delegan highlighted a specific practical advance behind the project. Argonne has developed a technologically integratable platform that lets these quantum sensors actually get built into existing microelectronic systems for the first time, giving researchers real flexibility to adapt the sensors to wildly different experimental needs, some requiring operation in intense radiation environments, others needing exceptional precision, others constrained by limited physical space for instrumentation.

The team plans to build prototype ultra high precision sensors and large area magnetic field mapping systems. Testing them in radiation rich and high magnetic field environments before developing field ready prototypes for actual future experiments, with Delegan framing the broader significance directly, this kind of quantum sensing was pure science fiction five or ten years ago and is now considered a practical path toward genuinely useful devices

Quantum Diamonds Meet Particle Physics in New Argonne Research Initiativewww.newswise.com