Noise as a Resource: Experimental Demonstration of Environment‐Assisted Quantum Transport on Quantum Hardware

Decoherence‐free subspaces (DFS) provide passive protection against collective noise but require spatially correlated dephasing (). Using 59 367 normal modes from the ab initio dataset of Klinger et al. (J. Chem. Phys. 153 215103 (2020)), we compute the spectral density cross‐correlation matrix of the Fenna–Matthews–Olson (FMO) complex and find the spectrally weighted effective noise correlation , confirming independent noise. We demonstrate environment‐assisted quantum transport (ENAQT) on two superconducting processors—Rigetti Ankaa‐3 (iSWAP‐native) and IQM Garnet (CZ‐native)—using circuit depth to control intrinsic hardware dephasing, without engineered noise injection. Implementing the FMO Hamiltonian directly, both platforms resolve the complete ENAQT curve: on Rigetti, efficiency rises from 1% to 58% (57 enhancement, 44) before declining in the quantum Zeno regime; on IQM, efficiency peaks at 70% (42). Reproducibility is confirmed across independent runs on different dates and qubit sets. Cross‐platform agreement establishes that noise‐assisted transport driven by intrinsic hardware decoherence is observable and robust on current gate‐based quantum processors.