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Xanadu and AMD release open-source quantum-classical interface tool

September 10, 2026 7:02 AM

Xanadu Quantum Technologies Limited (NASDAQ/TSX: XNDU) and AMD announced the release of Backline, an open-platform solution co-designed to enable low-latency communication between quantum and classical computing hardware.

Backline is built on Xanadu's open-source PennyLane software platform and is available as an open-source feature suite within PennyLane. The solution is designed to connect standard CPUs, FPGAs, and GPUs to quantum processors without requiring vendor-specific hardware.

According to the companies, Backline achieves end-to-end classical-quantum loop times under three microseconds. The solution supports use cases including quantum error correction, real-time network signal processing, and high-speed sensing.

The platform is compatible with AMD EPYC and Threadripper CPUs, AMD Instinct GPUs, AMD Versal FPGAs, and AMD Pensando networking hardware. Users interact with the system through a Python programming interface.

"Quantum processors require ultra-fast classical infrastructure, operating behind the scenes," said Dr. Christian Weedbrook, Founder and Chief Executive Officer of Xanadu. "By integrating Backline into PennyLane, we are providing direct access to the communication layers that the industry needs to move from laboratory R&D to real-world performance."

"We co-designed Backline with Xanadu so a single Python program can span AMD EPYC and Threadripper CPUs, AMD Instinct GPUs, AMD Versal FPGAs and AMD Pensando networking, and route every task to the engine that meets its latency budget," said Scott Tease, Corporate Vice President, HPC and Sovereign AI, AMD.

Backline is available now as part of the PennyLane platform.

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