Qunnect, Cisco, and Deutsche Telekom Demonstrate Quantum Networks Over Existing Fiber, Building Secure Urban Quantum Communication Infrastructure

Fiber Broadband Association USA

Overview

Qunnect, in collaboration with Cisco and Deutsche Telekom, has demonstrated the ability to build and scale quantum networks using existing commercial fiber optic infrastructure and hardware. This establishes a practical pathway for scalable quantum networks, enabling quantum key distribution (QKD) and connecting quantum computers and sensors. The technology leverages room-temperature quantum memory, entangled photon sources, and network devices for long-distance quantum communication, with urban reliability proven through New York City’s ‘GothamQ’ project.

In Depth

Key Findings

Qunnect, in partnership with Cisco and Deutsche Telekom, has successfully demonstrated a method for constructing and expanding scalable quantum networks using existing commercial fiber optic infrastructure and off-the-shelf hardware. This pivotal achievement not only paves the way for the immediate deployment of Quantum Key Distribution (QKD) but also lays a practical foundation for more advanced quantum applications such as distributed quantum computing and ultra-precise sensor networks in the future.

Technical Details

Qunnect’s technology primarily consists of quantum memories, entangled photon sources, and network devices designed to support long-distance quantum communication, all compatible with existing fiber optic cables. A notable feature is their room-temperature quantum memory technology, which significantly reduces the deployment costs and operational complexity typically associated with quantum networks by eliminating the need for elaborate cryogenic cooling systems. The company’s ‘GothamQ’ project, active in New York City, is demonstrating the reliability and practicality of quantum networking technology in an urban environment using existing fiber optic lines. This system is architected for scalable deployment in a hub-and-spoke topology, facilitating secure quantum information transfer across metropolitan and wider areas.

Background and Industry Context

Quantum networks are crucial for addressing the pressing demand for QKD, which protects data from potential future quantum computer attacks capable of breaking current cryptographic methods. Beyond security, they offer the potential to enhance computational power by connecting remote quantum computers and to enable ultra-sensitive sensor networks. Historically, maintaining and transferring quantum information over long distances, particularly through the development of ‘quantum repeaters,’ has been a significant challenge. Qunnect’s approach provides a commercially viable solution that maximizes the utility of existing infrastructure, thereby accelerating the proliferation of quantum networks.

Strategic Significance and Outlook

The collaboration between Qunnect, Cisco, and Deutsche Telekom marks a crucial step towards the standardization and commercialization of quantum network technology. The ability to utilize existing fiber infrastructure significantly lowers the economic barriers to quantum network deployment, thus speeding up its adoption. Qunnect plans further testbed deployments in Europe and other regions, steadily advancing its roadmap towards a functional quantum internet. Cybersecurity remains a primary driver for investment in quantum networking, making this technology an indispensable element in shaping the future of secure communication infrastructure.