First Unified Benchmark Red-Teams VQE Adversarial Robustness

Researchers have detailed the first unified benchmark designed to rigorously assess the security of the Variational Quantum Eigensolver (VQE) algorithm against adversarial attacks. Dubbed VQE-AdvBench, the new framework systematizes previously isolated attack studies, moving beyond individual analyses to a comprehensive evaluation of VQE’s robustness. The researchers evaluated seven attack scenarios, including the QTrojan circuit backdoor and QDoor parameter backdoor, using a fixed configuration on H2 and H6 molecules across five noise-calibrated backends. Their results reveal that noise-induced attacks manipulating the Zero-Noise Extrapolation pipeline are the most damaging, amplifying error up to 8.84, while the QDoor backdoor proved least effective, yielding only marginal amplification up to 1.37. This work highlights an emerging risk for cloud-based quantum computing: vulnerabilities arising from compromised service components or malicious insiders within the transpilation stack. Researchers have established VQE-AdvBench, the first unified framework designed to rigorously…