vectorized-quantum-control-riscv

name

vectorized-quantum-control-riscv

description

Vectorized Quantum Control Processor (QCP) architecture using RISC-V Vector Extension with quantum-oriented extensions. Addresses up to 128 qubits per instruction with hardware-based halt-resume protocol within 80ns. Use when: designing quantum control processors, scaling qubit control systems, RISC-V quantum extensions, mid-circuit measurement feedback, or scalable quantum control architectures. arXiv: 2607.07372

Vectorized Quantum Control: RISC-V Architecture

Core Concept

Build Quantum Control Processors (QCPs) on RISC-V Vector (RVV) engine with quantum-oriented extension, leveraging RVV's high parallelism to address up to 128 qubits in a single instruction.

Key Findings (arXiv: 2607.07372)

• 128 qubits per instruction via RVV parallelism
• 80ns halt-resume protocol for mid-circuit measurement feedback
• 2.52x speedup over baseline in program execution time
• Excellent scalability for large qubit systems

Architecture

1. RVV-Based QCP: RISC-V Vector engine with quantum-oriented ISA extension
2. Parameterized Rotation Instructions: Embed rotation parameters directly in ISA for dynamic gate tuning
3. Hardware Halt-Resume Protocol: 80ns resume latency for mid-circuit measurements
4. FPGA Prototype: Validated on both RISC-V toolchains and FPGA

Instruction Design

• Vector-load qubit addresses (up to 128 per instruction)
• Embed parameterized rotation info for hybrid quantum-classical programs
• Hardware interrupt for measurement results → resume within 80ns

Pitfalls

• Existing QCP designs use customized instruction sets, limiting reuse
• Addressing and scheduling in highly scalable scenarios is a critical challenge
• Mid-circuit measurement requires fast feedback loops (<100ns)

Activation Keywords

• vectorized quantum control, RISC-V quantum, QCP architecture, qubit addressing, mid-circuit measurement, halt-resume protocol, scalable quantum control