Diamonds Go Quantum: US Physicists Forge a New Path for Electromagnetic Field Sensing
Published: August 19, 07:39
Source: Interesting Engineering
Image credit: Nazar Delegan/Argonne National Laboratory
Quantum sensing is an emerging area of physics that exploits atomic-scale behavior to make extraordinarily precise measurements. In this vein, the U.S. Department of Energy’s Argonne National Laboratory has kicked off a $1 million, three-year effort to build quantum sensors out of diamond crystals. The funding comes from the DOE’s Office of High Energy Physics through its quantum information science program. These sensors rely on quantum states produced by particular flaws in the crystal lattice: when a nitrogen atom takes the place of a carbon atom and sits next to an empty spot left by a missing neighbor.
The defects are sensitive to magnetic and electric fields because their quantum energy levels shift in response. Shifts are detected by shining light and microwaves on the material. The research team aims to deliver ultra-high-precision detectors, large-area magnetic field mapping systems, and arrays suited to rapidly changing fields. The project is structured in three phases:
- Adapting diamond material for high-energy physics applications
- Testing near strong magnets and under radiation exposure
- Building field-ready prototypes
Diamond is naturally radiation-hard, which makes it attractive for this kind of sensing hardware. Co-lead scientist Nazar Delegan noted: “This is another front in what could be a quantum revolution. Five or ten years ago, this sounded like science fiction. Today we see realistic routes toward devices that will be useful for other researchers and for ourselves.”
Project lead Peter Winter, a physicist, also stressed the initiative’s significance for advancing quantum technologies.
The effort could pave the way for integrating quantum sensors into everyday microelectronics, a key milestone for the field. Beyond that, diamond-based quantum sensors may have a wide impact across medicine, geophysics, and security. High-precision electromagnetic field measurements are essential for exploring new materials and building technologies such as quantum computers. This project is viewed as a major step toward taking quantum systems out of the lab and into practical use—potentially reshaping many aspects of daily life.
As researchers explore advanced sensing technologies, innovations from different regions are also emerging. For instance, a new sensor developed in China enables robots to detect objects without physical contact, showcasing the growing trend of non-invasive measurement techniques. This development complements the ongoing efforts in quantum sensing, highlighting a broader shift towards precision in various fields. To learn more about this intriguing advancement, visit this article.