Xairos

Xairos Systems Inc. is a Colorado-based deep-tech company developing a global, resilient, space-based timing architecture built on Quantum Time Transfer (QTT) — a protocol invented, patented, and perfected by the Xairos team. Founded in 2018 and headquartered in Lafayette, Colorado, the company is commercializing QTT to deliver the next generation of Position, Navigation, and Timing (PNT), targeting sub-nanosecond-level timing accuracy that is roughly 1,000 times more precise than conventional RF and optical time-transfer methods, while resisting jamming and spoofing.

Accurate timing synchronization underpins the world's transportation systems, telecommunications networks, financial transactions, data centers, and power grids — nearly all of which currently rely on GNSS/GPS signals that are vulnerable to jamming, spoofing, and outages. By harnessing entangled-photon sources, high-precision clocks, optical communications terminals, and its patented QTT protocol, Xairos has developed a commercially viable system architecture spanning satellite nodes, base ground nodes, and user ground nodes, offering a quantum-secure and unspoofable alternative and complement to GNSS-based timing.

Xairos's work is backed by government and research partners, including a Quantum Time Transfer demonstration project supported by the European Space Agency (ESA), and the company has briefed audiences at venues including the Open Compute Project's Time Appliances Project, the Space Foundation, and Geospatial World. The company name is inspired by Kairos, the Greek concept of the 'opportune moment,' reflecting both its proprietary quantum technology and its mission to redefine secure, precise timing for modern networks.

Xairos's product line spans hardware and software: the Quantum Time Transfer (QTT) system for satellite-to-ground quantum clock synchronization, the OLYMPUS ClockSynQ-Sim simulation toolbox for modeling entanglement-distribution networks, and the ARES-A1 free-space optical terminal for GNSS-denied PNT and secure communications on airborne, maritime, and terrestrial mobile platforms. Xairos is a U.S. Government contractor and an Equal Opportunity Employer including Disability and Veteran status.