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Orchestrating Quantum-HPC Workflows with Distributed Quantum Circuit Cutting
DescriptionMost quantum computers today are constrained by hardware limitations, particularly the number of available qubits, causing significant challenges for executing large-scale quantum algorithms. Circuit cutting has emerged as a key technique to overcome these limitations by decomposing large quantum circuits into smaller subcircuits that can be executed independently and later reconstructed. Qdislib is a distributed and flexible library for quantum circuit cutting, designed to seamlessly integrate with hybrid quantum-classical HPC systems. Qdislib employs a graph-based representation of quantum circuits to enable efficient partitioning, manipulation and execution, supporting both wire and gate cutting techniques. The library is compatible with multiple quantum programming languages, including Qiskit and Qibo, and leverages distributed computing to execute subcircuits across CPUs, GPUs, and quantum processing units in a fully parallelized manner. The paper describes Qdislib and demonstrates how it enables the distributed execution of quantum circuits across heterogeneous resources, showcasing its potential for scalable quantum-classical workflows.
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