Calgary Researchers Unveil Innovative Quantum Uses for Diamonds

Researchers at the University of Calgary have made a groundbreaking discovery that challenges long-standing beliefs about the optical properties of diamonds. In a paper published in early December 2025, the team from the university’s Quantum Nanophotonics Lab demonstrated a novel use of diamonds in the realm of quantum nanophotonics, particularly in the process known as second-harmonic generation. This significant advancement allows for the conversion of one color of light into another by changing the frequency and length of a light wave.

Historically, diamonds were considered unsuitable for such optical transformations due to their symmetrical crystalline structure. However, the researchers have shown that by manipulating tiny defects within the diamond’s structure, they can achieve results previously thought impossible. Dr. Paul Barclay, a professor in the Department of Physics and Astronomy and the lead of the Quantum Nanophotonics Lab, stated, “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.”

New Applications and Potential Impact

The implications of this discovery are vast. According to Sigurd Flågan, a postdoctoral scholar who led the experiments, diamonds can effectively handle high levels of laser power without degrading. This capability opens the door to creating powerful optical switches, lasers, and modulators that surpass current limitations in technology. Flågan explained, “What we can do with our discovery now is, in principle, create an optical switch, laser, or modulator that can handle a lot more power than is currently achievable.”

The potential applications for this technology include enhanced data centers, high-powered laser fabrication, and advanced optical processing. Flågan noted that the foundational work for this research began three years ago, with initial observations made at the end of 2023 and into 2024. The team only finalized their understanding of the phenomenon at the beginning of 2025.

Ongoing Research and Future Directions

The ongoing research at the University of Calgary represents a significant step forward in the field of quantum nanophotonics. The team’s findings showcase how conventional materials can be re-evaluated and utilized in innovative ways. The work aligns with broader trends in technology development, particularly as Alberta has earmarked $55 million to establish a tech and science hub at the university.

As researchers continue to explore the potential of diamonds in quantum applications, the future looks promising. The ability to manipulate light at the quantum level could lead to breakthroughs that enhance computing, communication, and various technological applications, marking a new era in optical science.

This discovery highlights the importance of continual innovation and exploration in scientific research, with the potential to transform industries and redefine how we utilize materials in technology. The team at the University of Calgary remains at the forefront of this exciting field, paving the way for future advancements in quantum nanophotonics.