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A two-kilometer free-space demonstration validates quantum-secure communications and resilient PNT capabilities
Xairos Systems has met a significant milestone for its Ares Quantum Optical Terminal, a robust system designed to deliver quantum-secure, high-data-rate communications and resilient position, navigation and timing (PNT) in RF- and GPS-denied environments.
The Ares terminal will combine 10 Gbps free-space optical communications, entangled photon distribution for timing and encryption key sharing, and a stable clock ensemble disciplined by Xairos’ exclusive Quantum Time Transfer technology.
Xairos completed two-kilometer free-space range testing with Space Development Agency-compliant optical communications and established simultaneous quantum and optical links using a common Ares Quantum Optical Terminal. This free-space testing — distinct from fiber-based demonstrations — marks a critical step toward real-world operational deployment.
The fully integrated Ares Quantum Optical Terminal will combine 10 Gbps free-space optical communications, entangled photon distribution for timing and encryption key sharing, and a stable clock ensemble disciplined by Xairos’ Quantum Time Transfer (QTT) technology — all within a ruggedized compact package. QTT provides unprecedented security and resilience for PNT where GPS and RF signals are unavailable or jammed.
The Ares Quantum Optical Terminal underpins a communications and PNT mesh network for aircraft, uncrewed aerial systems (UAS), ships, and other assets in contested environments, and serves as a foundation for a future space-based architecture spanning satellites, air vehicles and ground nodes.
