Quantum Machines Achieves 99.5% Two-Qubit Gate Fidelity Operating Rigetti’s Novera QPU

Quantum Machines Achieves 99.5% Two-Qubit Gate Fidelity Operating Rigetti’s Novera QPU Quantum Machines (QM) has operated Rigetti Computing’s commercially available Novera superconducting quantum processing unit (QPU) using external control hardware and software, reaching a 99.5% median two-qubit gate fidelity. Configured via the OPX1000 orchestration platform and managed by QUAlibrate automation software, the onsite optimization process achieved full calibration within ten days. The results match the peak internal calibration metrics recorded by the hardware manufacturer, validating that high-performance superconducting processors can maintain stable execution parameters when decoupled from the developer’s proprietary control infrastructure. Technical Architecture & Device Tuning Specifications The Novera processor is an on-premises 9-qubit superconducting QPU engineered on Rigetti’s Ankaa-class architecture, featuring a square lattice of tunable transmons with 12 available qubit couplings. To optimize the system’s performance metrics, the QM engineering team replaced the native control stack with the OPX1000 platform, initiating parallelized tuning routines and real-time control optimization across the device’s microwave drive lines and flux bias channels. This external orchestration loop achieved a 99.93% median single-qubit fidelity across all nine transmons, alongside the 99.5% median two-qubit gate fidelity benchmark across all 11 active couplings, reducing phase noise and thermal fluctuations across the full chip. Historically, reaching baseline operational thresholds on gate-model superconducting hardware required manual tuning and captive control electronics developed by the chip manufacturer. By managing the Novera device via a hardware-agnostic orchestration platform, the automated workflow demonstrates that real-time feedback loops and systematic calibration software can maintain low error rates independently. This decoupling of the processor substrate from the underlying control infrastructure addresses an infrastructure bottleneck for laboratories managing multi-vendor installations, simplifying the operational requirements for error mitigation as systems scale. Enterprise Infrastructure & Open Architecture Deployments The validation of external control systems supports the deployment of compact quantum hardware across academic, commercial, and sovereign research laboratories. The QM orchestration platform is currently operated in tandem with Novera systems at Fermilab, Montana State University, and Horizon Quantum Computing. Additionally, systems integrator TreQ has incorporated the OPX1000 controller into its multi-QPU installation to form the core baseline for its initial Open Architecture Quantum (OAQ) specifications. This open-architecture framework enables users to pair alternative software and control stacks with standard QPUs, providing research groups with direct physical access to system parameters to advance custom algorithm prototyping and error correction experiments. You can review the official joint performance announcement via the Quantum Machines press room here. May 29, 2026 Mohamed Abdel-Kareem2026-05-29T19:29:51-07:00 Leave A Comment Cancel replyComment Type in the text displayed above Δ This site uses Akismet to reduce spam. Learn how your comment data is processed.