Fiber-integrated entangled photon source for quantum networks
This technology describes a new way to build optical fibers that can generate entangled photons — pairs of light particles that are quantum-mechanically linked, a foundational requirement for quantum communication and quantum computing networks. The key innovation is embedding a nonlinear crystal (such as Barium Borate) directly inside the fiber during manufacturing, rather than relying on external bulk crystals as is typical today. The manufacturing method involves preparing a fiber preform with the crystal already inside, heating it, and drawing it into a continuous fiber — essentially adapting a well-understood industrial process (fiber drawing) to produce a quantum-capable component at scale. This approach could make entangled photon sources smaller, more robust, and more compatible with existing fiber-optic infrastructure.
What you could build
A fiber-integrated entangled photon source sold as a drop-in component for quantum key distribution (QKD) systems and quantum networking hardware; primary buyers would be quantum networking equipment manufacturers and defense/intelligence agencies building secure communications infrastructure.
Who in Virginia should care
Defense contractors and intelligence community integrators in the Northern Virginia corridor (e.g., Booz Allen, SAIC, Leidos) pursuing quantum-secure communications infrastructure would be natural early customers.
Readiness: Concept
Concept — described but not yet demonstrated. Lab validated — supported by experimental results in the patent. Prototype likely — the text describes a built, working embodiment.
Readiness is inferred from the patent text, not from a lab visit.
The record
- Inventors
- Gary Pickrell
- Filed
- Patent pending — filed November 14, 2024
- Status
- Application
- Publication number
- US20250314816A1
Ready to talk?
Virginia Tech Intellectual Properties handles licensing for this technology. Email us for an introduction prosim@harbor.capital.
Prosim summaries are generated from public patent text and are not legal advice.