Tower Semiconductor and Xanadu have expanded their partnership to develop a manufacturable silicon photonics platform for fault-tolerant quantum computing. This collaboration utilizes Tower’s high-volume foundry infrastructure to industrialize Xanadu’s photonic circuit designs, transitioning hardware from prototype to demonstrator systems. The joint engineering effort focuses on a custom production flow for a specialized material stack designed to maintain optical performance and scalability as system complexity increases.
Technical developments center on the optimization of ultra-low loss silicon nitride (SiN) waveguides and integrated photodiodes within standard product flows. These components are critical for measurement-based quantum computing (MBQC) architectures, which require the generation and entanglement of thousands of qubits on a single photonic chip. By validating these designs on an established 200mm manufacturing platform, the partnership aims to meet the precise tolerances and high-yield requirements of large-scale quantum information processing.
This manufacturing-aligned approach leverages Tower Semiconductor’s PH18 silicon photonics platform to provide a foundation for commercial-scale hardware. The expansion secures a dedicated fabrication route for Xanadu’s custom material stack, ensuring compatibility with industrial semiconductor processes. This technical alignment is intended to facilitate the deployment of photonic quantum modules that integrate with existing telecommunications and data center infrastructure.
For further technical specifications, consult the official documentation from Tower Semiconductor here, review Xanadu’s photonic hardware architecture here, explore the Tower SiPho technology platform here, or access research on PennyLane here.
February 19, 2026
