Melita’s two main data centers in Malta are now secured by a quantum link, marking a step beyond laboratory tests and into practical, operational deployment of quantum key distribution. Terra Quantum, in collaboration with Melita Business and Merqury Cybersecurity, has successfully connected the data centers using its QKD technology on existing fiber infrastructure, addressing a major barrier to wider adoption. This installation demonstrates quantum-secure key exchange can function within active telecom networks without costly infrastructure modifications. “By operating our quantum key distribution technology on a live telecom network, we are proving that quantum security can be integrated into existing infrastructure today,” said Markus Pflitsch, Founder and CEO of Terra Quantum, comparing the development to the shift from unencrypted to encrypted internet traffic in the early 2000s.
Melita Network Deploys Quantum Key Distribution (QKD)
This deployment is a functioning system protecting critical infrastructure, and it achieves this without requiring a complete overhaul of existing fiber optic cabling. The system leverages Dense Wavelength Division Multiplexing (DWDM) to operate alongside conventional data traffic on Melita’s established fiber network, a crucial detail that addresses a major hurdle to widespread QKD adoption. Unlike many experimental setups demanding dedicated unused optical fiber, this installation proves quantum-secure communication can integrate into active telecom networks without modifications. Terra Quantum’s proprietary QKD technology incorporates a Quantum Random Number Generator (QRNG) for unpredictable cryptographic keys and Optical Time-Domain Reflectometry (OTDR) to monitor the fiber link for intrusion attempts, creating a robust security layer. This advancement arrives at a time when the threat to current encryption methods from advancing quantum computers is growing.
The deployment has already processed tens of thousands of key requests without incident, demonstrating operational stability within a live telecom environment. Matthew Farrugia, Technical Head of Service Delivery & Data Centre at Melita, emphasized the importance of the project: “Ensuring the highest level of security for the connection between our data centers is essential. Quantum cryptography provides a new layer of protection and allows us to detect any attempt to compromise the communication link.” This successful implementation in Malta contributes to broader European efforts to establish a continent-wide quantum-secure communications network, bolstering technological sovereignty and long-term data protection.
DWDM Integration Enables Quantum Security on Lit Fiber
The pursuit of quantum-secured communication networks is rapidly shifting demonstrations to practical deployment, with a key challenge being integration with existing telecommunications infrastructure. Early quantum key distribution (QKD) systems often necessitated dedicated unused optical fiber, but this recent installation demonstrates a viable path forward utilizing currently active networks. This deployment circumvents the costly and disruptive process of replacing established fiber optic cables, a significant barrier to widespread QKD adoption. The system leverages Terra Quantum’s proprietary QKD technology alongside Merqury’s networking hardware and key management capabilities, creating a fully integrated solution. These components work together to ensure provably secure encryption for critical digital infrastructure, detecting any attempt to intercept communications. This advancement arrives at a critical moment, as the increasing power of quantum computers threatens to render current public key encryption methods vulnerable, necessitating a proactive shift towards quantum-resistant solutions. The successful Malta deployment signals a move towards building a quantum-secure communication backbone for Europe and beyond.
By successfully operating our quantum key distribution technology on a live telecom network, we are proving that quantum security can be integrated into existing infrastructure today, moving from research laboratories into real-world deployment. This represents a major step toward building the quantum-secure communication backbone Europe will rely on in the future.”
Markus Pflitsch, Founder and CEO of Terra Quantum
Terra Quantum’s QRNG & OTDR Secure Key Exchange
Terra Quantum, a Munich-based quantum technology firm, is extending quantum security beyond laboratory settings with a recently deployed Quantum Key Distribution (QKD) link connecting the two primary data centers of Melita Business in Malta. This installation is a functional quantum-secure communication channel operating within a live telecommunications network, a critical step toward widespread adoption. The system leverages Terra Quantum’s proprietary technology alongside solutions from Merqury Cybersecurity, enabling the secure exchange of cryptographic keys across Melita’s existing fiber optic infrastructure. A key technical achievement of this deployment is its ability to function on currently active fiber, utilizing Dense Wavelength Division Multiplexing (DWDM). Together, these components establish a provably secure encryption method for critical digital infrastructure, ensuring any interception attempts are immediately flagged.
By successfully operating our quantum key distribution technology on a live telecom network, we are proving that quantum security can be integrated into existing infrastructure today.”
Markus Pflitsch, Founder and CEO of Terra Quantum
The deployment of quantum key distribution (QKD) technology across Melita’s operational fiber network in Malta signifies a critical shift; quantum security is no longer confined to laboratory experiments but is actively fortifying real-world telecommunications systems. As widely used public key encryption methods become increasingly vulnerable, technologies like QKD are becoming essential for safeguarding sensitive data across sectors including telecommunications, finance, and government.
Quantum security only becomes useful when it can be deployed, controlled and monitored as any other system on a network. By integrating Terra Quantum’s QKD technology with Merqury’s quantum network management suite, we have shown that quantum-secure services can move beyond the lab and into real telecom operations.”
Noel Farrugia, Chief Technology Officer at Merqury Cybersecurity
