STABSim: A Parallelized Clifford Simulator with Features Beyond Direct Simulation

Fuente: arXiv
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Hauptverfasser: Garner, Sean, Liu, Chenxu, Wang, Meng, Stein, Samuel, Li, Ang
Format: Preprint
Veröffentlicht: 2025
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author Garner, Sean
Liu, Chenxu
Wang, Meng
Stein, Samuel
Li, Ang
author_facet Garner, Sean
Liu, Chenxu
Wang, Meng
Stein, Samuel
Li, Ang
contents The quantum stabilizer formalism became foundational for understanding error correction soon after the realization of the first useful quantum error correction codes. Stabilizers provide a way to describe sets of quantum states which are valid codewords within a quantum error correction (QEC) scheme. Existing stabilizer simulators are single threaded applications used to sample larger codes than is possible with other methods. However, there is an outstanding gap in the scaling and accuracy of current simulators for QEC as quantum computing exceeds hundreds of qubits, along with an under-utilization of the capabilities of highly-efficient stabilizer simulation across other quantum domains. In this work, we present the first GPU-accelerated tableau stabilizer simulator to scale better than CPU methods in QEC workloads, by trivializing Clifford gates and exploiting the large parallelism of dedicated GPUs with CUDA warp-level primitives to quickly overcome costly measurement gates. We then implement a new error model that captures non-unitarity in T1/T2 error channels much faster and with exact accuracy for most physical qubits, demonstrate a chemistry use case, and present a new Clifford+T to Pauli-Based Computing (PBC) transpilation optimization through our simulator.
format Preprint
id arxiv_https___arxiv_org_abs_2507_03092
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle STABSim: A Parallelized Clifford Simulator with Features Beyond Direct Simulation
Garner, Sean
Liu, Chenxu
Wang, Meng
Stein, Samuel
Li, Ang
Quantum Physics
The quantum stabilizer formalism became foundational for understanding error correction soon after the realization of the first useful quantum error correction codes. Stabilizers provide a way to describe sets of quantum states which are valid codewords within a quantum error correction (QEC) scheme. Existing stabilizer simulators are single threaded applications used to sample larger codes than is possible with other methods. However, there is an outstanding gap in the scaling and accuracy of current simulators for QEC as quantum computing exceeds hundreds of qubits, along with an under-utilization of the capabilities of highly-efficient stabilizer simulation across other quantum domains. In this work, we present the first GPU-accelerated tableau stabilizer simulator to scale better than CPU methods in QEC workloads, by trivializing Clifford gates and exploiting the large parallelism of dedicated GPUs with CUDA warp-level primitives to quickly overcome costly measurement gates. We then implement a new error model that captures non-unitarity in T1/T2 error channels much faster and with exact accuracy for most physical qubits, demonstrate a chemistry use case, and present a new Clifford+T to Pauli-Based Computing (PBC) transpilation optimization through our simulator.
title STABSim: A Parallelized Clifford Simulator with Features Beyond Direct Simulation
topic Quantum Physics
url https://arxiv.org/abs/2507.03092