Towards System-Level Quantum-Accelerator Integration

• URL: http://arxiv.org/abs/2507.19212v1
• Date: Fri, 25 Jul 2025 12:30:42 GMT
• Title: Towards System-Level Quantum-Accelerator Integration
• Authors: Ralf Ramsauer, Wolfgang Mauerer,
• Abstract summary: We propose a vertically integrated quantum systems architecture that treats quantum accelerators and processing units as peripheral system components.<n>A central element is the Quantum Abstraction Layer (QAL) at operating system kernel level.<n>We present first results towards such an integrated architecture, including a virtual QPU model based on QEMU.
• Score: 3.4486179803947254
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum computers are often treated as experimental add-ons that are loosely coupled to classical infrastructure through high-level interpreted languages and cloud-like orchestration. However, future deployments in both, high-performance computing (HPC) and embedded environments, will demand tighter integration for lower latencies, stronger determinism, and architectural consistency, as well as to implement error correction and other tasks that require tight quantum-classical interaction as generically as possible. We propose a vertically integrated quantum systems architecture that treats quantum accelerators and processing units as peripheral system components. A central element is the Quantum Abstraction Layer (QAL) at operating system kernel level. It aims at real-time, low-latency, and high-throughput interaction between quantum and classical resources, as well as robust low-level quantum operations scheduling and generic resource management. It can serve as blueprint for orchestration of low-level computational components "around" a QPU (and inside a quantum computer), and across different modalities. We present first results towards such an integrated architecture, including a virtual QPU model based on QEMU. The architecture is validated through functional emulation on three base architectures (x86_64, ARM64, and RISC-V), and timing-accurate FPGA-based simulations. This allows for a realistic evaluation of hybrid system performance and quantum advantage scenarios. Our work lays the ground for a system-level co-design methodology tailored for the next generation of quantum-classical computing.

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