Calgary Researchers Uncover Innovative Quantum Uses for Diamonds

Researchers at the University of Calgary have made a significant breakthrough in quantum science, revealing new applications for diamonds in the field of quantum nanophotonics. In early December 2025, the university’s Quantum Nanophotonics Lab published a paper detailing how they achieved second-harmonic generation in diamonds, a process that involves converting one color of light into another by altering the frequency and wavelength.

Traditionally, the crystalline structure of diamonds was considered too symmetrical to facilitate such optical transformations. Lead researcher Dr. Paul Barclay, a professor in the university’s Department of Physics and Astronomy, explained the implications of this discovery, stating, “Not only are we kind of breaking the rules by seeing these effects, but we’ve done so in a way where we can control how strongly we are breaking the rules.”

By exploiting microscopic defects within the diamond’s crystal lattice, the team circumvented previous limitations, paving the way for innovative uses in quantum nanophotonics. Postdoctoral scholar Sigurd Flågan, who led the experimental work, emphasized the robustness of diamonds, saying, “Diamond is very good at handling a lot of laser power—you can have a lot of power coming in without breaking material.” This characteristic allows for the potential development of optical switches, lasers, or modulators that can manage significantly more power than current technologies.

Potential Applications and Future Research

The practical implications of this research extend to various sectors, including data centers, high-powered laser fabrication, and optical processing. Flågan noted that while the findings were published recently, the research has been in progress for several years. The team first observed the phenomenon in late 2023, with further experimentation continuing through 2024. “However, we didn’t have the final intuition and model of what was happening until the beginning of 2025,” he added.

This groundbreaking work positions the University of Calgary as a key player in the quantum research landscape, particularly within the realm of optical technologies. The findings not only challenge existing paradigms regarding the optical capabilities of diamonds but also suggest a range of applications that could revolutionize multiple industries.

As quantum technology continues to advance, the ability to manipulate light at the nanoscale could lead to more efficient data processing and transmission systems, underscoring the importance of this research. The potential for diamonds to play a pivotal role in these advancements highlights the dynamic intersection of materials science and quantum physics, offering exciting prospects for future exploration.

In light of these developments, the Alberta government has earmarked $55 million to establish a technology and science hub at the University of Calgary, further supporting the growth of innovative research in the region.

As researchers delve deeper into the quantum properties of materials, the discovery of new uses for diamonds could mark a transformative moment in quantum science, paving the way for advancements that were once thought impossible.