UW Researchers Ink Their Way Toward Quantum computing Breakthrough
SEATTLE,WA – July 19,2025 – University of Washington researchers have achieved a significant step toward building a photonic quantum computer by successfully utilizing inkjet printing too precisely position quantum dots – nanoscale semiconductors with unique light-emitting properties. teh innovation overcomes a major hurdle in quantum computing development: the delicate manipulation of these incredibly small components.
For decades, quantum dots have illuminated television screens with vibrant color, but their potential extends far beyond display technology. These tiny particles exhibit quantum mechanical properties that could revolutionize computing, enabling processing speeds and capabilities currently unattainable with customary silicon-based systems. The challenge lies in controlling and arranging these dots with the precision required for complex quantum circuits. This new method offers a scalable solution,potentially accelerating the realization of practical quantum computers.
“We took a quantum dot, wich is normally around 3 nanometers in diameter, and encapsulated it within a protective shell, increasing its size to approximately 100 nanometers,” explained UW Chemistry Professor and Clean Energy Institute researcher Heather Cossairt. “This larger particle is much easier to handle individually.”
The team then formulated an ink containing these shelled quantum dots and employed an electric field to eject them from an inkjet printer nozzle, strategically depositing them onto photonic cavities – essential building blocks for photonic quantum computers. This precise placement is critical for creating functional quantum systems.
the collaborative project,also involving UW Electrical & computer Engineering and Physics Professor Arka Majumdar and researcher Devin,represents a significant advancement in quantum dot manipulation. Cossairt’s group focused on synthesizing the quantum dots and developing the encapsulation process.
“This project has really gone far, and we’re excited to see what we can do with it next,” cossairt stated. Further research will focus on optimizing the process and exploring the potential for creating increasingly complex quantum circuits.
Those seeking more information can contact Professor Cossairt at cossairt@uw.edu.