QC Design

QC Design is a Munich-based quantum software company that builds design-automation tools for fault-tolerant quantum computers. Its main product, Plaquette, is used by hardware teams to model error-corrected logical qubits and estimate the physical qubit and cycle overhead a given architecture would need, with a focus on qLDPC codes and constraints such as two-dimensional local connectivity. It sits upstream of hardware builders, selling error-correction and architecture design software rather than quantum processors itself.

AI-written profile · not yet reviewed · 25 September 2026

Headquarters: Munich, Germany
Status: Private

error correction algorithms software

Coverage

The Quantum Insider24 September 2026

QC Design Reports 10x Logical Error Reduction With Meridian AI

QC Design published a white paper reporting that its Meridian AI system reduced logical error rates by more than 10x compared with published methods and general-purpose AI agents. The results covered more than 100 fault-tolerance design tasks, according to the company.

OutlookPlausible

Hardware teams could begin using purpose-built AI design tools like Meridian to more rapidly explore fault-tolerant architectures, compressing the iteration time needed to select and refine logical qubit schemes.

error correction algorithms softwareQC Design