Xanadu and AMD Launch Backline for Low-Latency Quantum-Classical Computing

Insider Brief

• Xanadu and AMD announced Backline, an open-source platform built with PennyLane for low-latency communication between quantum processors and classical computing hardware.
• Backline reports end-to-end classical-quantum loop times below three microseconds and supports CPUs, GPUs and FPGAs for applications including quantum error correction, network processing and sensing.
• The platform is designed to give developers hardware control through PennyLane’s Python interface while reducing reliance on proprietary classical hardware and vendor-specific frameworks.

PRESS RELEASE — Xanadu Quantum Technologies Limited (“Xanadu“; NASDAQ/TSX: XNDU), a leading photonic quantum computing company, in collaboration with AMD today announced the release of Backline, an open-platform solution, co-designed by Xanadu and AMD, for rapid communications between quantum and classical computing hardware. Backline is built using Xanadu’s open-source PennyLane software platform to solve one of quantum technology’s most pressing challenges: how to establish ultra-low-latency communication between classical processors and quantum hardware.

Today, quantum devices cannot operate in isolation. To operate effectively, quantum computers are expected to rely on classical hardware, such as GPUs, CPUs, and FPGAs, to shuttle massive streams of data back and forth between components within microseconds. While this ultra-fast, real-time communication is essential for applications such as quantum error correction (QEC), optical network routing, and high-speed sensing, establishing these links has historically limited developer agility by forcing teams into rigid, low-level software frameworks and vendor-locked classical hardware.