Digital Quantum Key Distribution

Light Rider's Quantum Light products generate quantum keys without internet connectivity and outside the primary data path, helping secure communications across today's IP networks.

Built for enterprise, defense, and critical infrastructure environments, Light Rider D-QKD adds a physical quantum security layer that works with your existing cybersecurity stack.

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Explore Quantum Light products

What is Light Rider D-QKD?

Light Rider D-QKD is a digital key generation and delivery architecture that secures communications to and from Quantum Light devices. Unlike traditional optical QKD systems, Light Rider's approach does not depend on dedicated quantum fiber links or specialized optical hardware.

Instead, Quantum Light products act as quantum access points — generating keys that support secure communications over existing IP infrastructure. Depending on configuration, the lights can support continuous key refresh ranging from thousands to millions of 256-bit keys per second.

These out-of-band keys synchronize with PQC, QKD, and D-QKD, allowing organizations to begin deploying quantum-safe security without replacing the networks they already use.

256-bit

Key length per generated key material block

1K – 1M+

Keys per second depending on configuration

Out-of-band

Key source separated from the primary IP data path

No fiber

Works on existing IP networks. No dedicated optical QKD hardware required

Stop generating keys inside the network you're trying to protect.

Encryption is only as strong as the keys protecting it. Traditional networks often create or exchange keys inside the same digital environment that carries the encrypted data. If that environment is compromised, recorded, or later weakened by a quantum computer, sensitive information is at risk.

Light Rider D-QKD separates the keys from the data path. Quantum Light products generate key material outside the primary communication channel, allowing organizations to strengthen existing IP networks with a separate quantum trust layer.

Harvest now, decrypt later

Attackers can capture encrypted traffic today and store it until future quantum computers make decryption possible. D-QKD introduces quantum key material, frequent key rotation, and out-of-band generation to help make host systems immune to these future attacks.

A more accessible path to quantum-safe security

Traditional optical QKD systems require significant infrastructure investment.
Light Rider D-QKD is designed to work with what you already have.

Network requirement

Hardware

Deployment complexity

Distance & scale

Cloud deployment

Security model

Traditional (optical) QKD

Dedicated fiber optical channels

Specialized optical QKD hardware required

High: controlled fiber paths, specialist deployment

Limited by physical distance and fiber infrastructure

Public cloud not supported

Quantum physics-based security

Light Rider D-QKD

Regular IP networks

Works on off-the-shelf, low-cost servers

Low: deploys into existing environments

Cloud-scale, network-agnostic, unlimited distance

Public cloud deployment supported

Multi-path defense in depth security

A quantum trust layer in four steps.

Generate

Quantum Light generates key material
‍
The Quantum Light TX (GEN2) generates quantum entropy and cryptographic keys outside the primary LAN. Binary key material is encoded into rapid pulses of visible light using On-Off Keying faster than the human eye can perceive.

Transmit

Visible light carries the keys
‍
Light pulses travel to an optical receiver (RX) over a dedicated out-of-band channel that is physically separate from the data network and invisible to any attacker monitoring IP traffic.

Deliver

The D-QKD layer validates and routes
‍
The RX passes keys into Light Rider's D-QKD layer, where they are validated, assigned, rotated, and delivered to approved endpoints. The layer controls who gets keys, how often they rotate, and how they enter your security stack.

Protect

Existing applications use the keys
‍
Approved apps, devices, and services use the delivered key material to strengthen sessions, authenticate endpoints, and secure communications all while protected traffic continues on your existing IP network.

Communications secured

Device authentication

Session initiation

Command & control traffic

Entropy delivery

Key exchange workflows

Telemetry & system status

App-to-device communication

Device-to-network communication

Integrates with

VPNs & firewalls

Identity & access management

Endpoint security

Zero trust platforms

SIEM & SOC workflows

Secure app gateways

Device management systems

PQC migration plans

Powering quantum-safe
journeys together.

Light Rider's D-QKD ecosystem is strengthened through partnerships with two of the leading names in quantum-safe security. Together, organizations can protect against Harvest Now, Decrypt Later threats without relying on dedicated optical infrastructure.