Xairos Systems (formerly known as Speqtral Quantum Technologies) is a company developing quantum-based timing and synchronization technologies for secure and resilient global communications infrastructure. It specializes in Quantum Time Transfer (QTT) and Quantum Clock Synchronization (QCS) and offers Quantum Timing as a Service (QTaaS), a suite of terrestrial time feeds, master clocks, and enterprise software for time-sensitive applications. The company caters to the telecom, financial, transportation, energy, data centers, defense, aerospace, and other industries.