Calgary Researchers Unlock New Quantum Potential of Diamonds

Researchers at the University of Calgary have made a groundbreaking discovery that could transform the field of quantum nanophotonics. In early December 2025, scientists from the university’s Quantum Nanophotonics Lab published a paper revealing new applications for diamonds, challenging previous assumptions about their optical properties. The study details how researchers successfully demonstrated second-harmonic generation in diamonds, a phenomenon that converts one color of light into another by altering the frequency and length of the lightwave.

Traditionally, diamonds were thought to be too symmetrical in their crystalline structure to facilitate such optical transformations. As noted by Dr. Paul Barclay, a professor in the Department of Physics and Astronomy and the lab’s lead, “There is a whole class of applications relating to wavelength conversion that aren’t possible in diamond for reasons that are fundamental and related to the nature of the diamond crystal.” His team’s findings indicate that they have not only observed these effects but can also control them in significant ways.

Innovative Techniques to Overcome Limitations

By exploiting tiny defects within diamond’s crystal lattice, the research team has circumvented the limitations that previously hindered the use of diamonds in high-power optical applications. Postdoctoral scholar Sigurd Flågan, who led the experiments, emphasized the material’s robustness, stating, “Diamond is very good at handling a lot of laser power—you can have a lot of power coming in without breaking material.” This discovery opens the possibility of creating optical switches, lasers, or modulators capable of managing far greater power levels than current technologies allow.

The implications for practical applications are substantial. Flågan mentioned potential uses in data centers, high-powered laser fabrication, and advanced optical processing. The research team began observing these phenomena in late 2023, continuing their work into 2024. However, they did not finalize their model and understanding of the underlying physics until early 2025.

Future Prospects and Funding

The significance of this discovery aligns with broader efforts in Alberta to enhance its technological capabilities. Recently, the provincial government earmarked $55 million to develop a science and technology hub at the University of Calgary. This funding is intended to foster innovation and support research initiatives similar to those undertaken by the Quantum Nanophotonics Lab.

The research team’s work has the potential to reshape the future of quantum optics and photonics, expanding the horizons of what diamonds can achieve in scientific and industrial applications. As the field continues to evolve, the University of Calgary stands at the forefront of this exciting frontier, challenging traditional notions and paving the way for new technologies.