Horizon Quantum Computing and Alice & Bob announced a strategic partnership on January 19, 2026, aiming to create a full-stack ecosystem for developing, testing, and deploying fault-tolerant quantum programs. The move bridges the gap between abstract quantum algorithms and physical hardware execution.
The collaboration integrates Alice & Bob’s fault-tolerant “cat qubit” emulators into Horizon Quantum’s Triple Alpha development environment. Cat qubits feature built-in protection against bit-flip errors, allowing developers to simulate error-corrected operations before physical chips are widely available.
Triple Alpha, Horizon Quantum’s integrated development environment, lets users program in high-level languages like C or Python. Its compiler translates these programs into optimized quantum instructions compatible with various hardware architectures.
The partnership specifically prepares for Alice & Bob’s upcoming Quantum Processing Units (QPUs). Triple Alpha will be one of the first third-party platforms capable of compiling code directly for these fault-tolerant systems.
The integration enables developers to track logical qubit usage, test error-correction strategies, and analyze resource requirements, all while maintaining hardware-agnostic code that can run on superconducting, ion-trap, or cat qubit architectures.
Leadership emphasized the importance of combining software and hardware expertise. “Achieving quantum advantage will require building systems that are fault-tolerant,” said Dr. Joe Fitzsimons, CEO of Horizon Quantum. Alice & Bob CEO Dr. Théau Peronnin added, “This partnership ensures a rigorous, research-driven approach to building a complete quantum software stack.”
Early Access users can expect the first emulation-ready cat qubit backend in late Q1 2026, allowing researchers to refine algorithms for chemistry, finance, and cryptography ahead of the physical QPU rollout later this year.
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