Oak Ridge National Laboratory Unveils World’s First Integrated Quantum Internet Chip

In a groundbreaking leap toward the future of quantum communication, scientists at the Oak Ridge National Laboratory (ORNL) have developed the world’s first integrated chip capable of generating and manipulating entangled photons, a crucial step toward building a scalable quantum internet.

Published in Optica Quantum, the research introduces a photon-based quantum information processing chip that works seamlessly with existing fiber optic infrastructure, enabling quantum data transmission using mass-producible components—a potential game-changer for cost and complexity in quantum networks.

A New Era for Quantum Internet Begins

Unlike traditional bits that represent a 0 or 1, quantum bits (qubits) can exist in multiple states simultaneously thanks to quantum superposition. This allows for richer and more complex information encoding. The new chip pushes the frontier by facilitating quantum entanglement—a phenomenon essential for secure and high-fidelity data transfer across quantum networks.

While other research groups have placed individual quantum photonic components on chips before, ORNL’s achievement marks the first time such specific capabilities have been unified on a single chip.

“We're not the first to put any one of these elements on a chip,” explained Joe Lukens, senior author and joint ORNL-Purdue professor, “but we are the first to integrate this specific functionality into a single, mass-producible device.”

How the Chip Works

The chip integrates:

Microring resonators – to generate entangled photon pairs

Polarization beam splitter-rotators – to route photons based on polarization

Broadband polarization entanglement generation – directly on-chip

These components together enable the chip to output photons that can be transmitted over conventional optical fiber networks, using standard telecom hardware.

ORNL quantum scientist and co-author Hsuan-Hao Lu noted: “These photons are compatible with existing telecom fiber cable networks. Once we generate and manipulate them, the rest can be handled with off-the-shelf telecom components.”

Record-Breaking Performance

The chip demonstrated more than 116 distinct communication channels, or “colors” of light, for data transmission—with over 100 channels exhibiting high fidelity, setting a new record in the field.

This scalability makes it a powerful foundation for future quantum networks capable of securely linking quantum devices over long distances—the essential architecture of a future quantum internet.

Why It Matters

The development represents a turning point in quantum technology. By shifting from fragile, lab-bound setups to standardized, scalable hardware, the ORNL chip could accelerate the democratization of quantum communication—bringing the quantum internet out of the lab and into real-world application.

From secure global communication to distributed quantum computing, this innovation paves the way for future breakthroughs across defense, finance, healthcare, and beyond.