Build Fault-Tolerant
Quantum Computers Faster

Design, simulate, and optimize fault-tolerant architectures under real hardware imperfections. Built for quantum hardware teams.

Explore the design space with purpose-built AI Design logical qubit experiments with confidence Overcome 20+ imperfections on real hardware

Designing for fault-tolerance

Achieve fault-tolerant quantum computing faster and smarter

Meridian brings purpose-built AI to fault-tolerant design. Plaquette provides the hardware-specific simulation to evaluate it.

Powerful fault-tolerance design software is necessary to achieve fault-tolerant quantum computing. It enables the implementation of logical circuits on hardware and the design of fault-tolerance architectures, both of which are critical but challenging tasks.

Building and maintaining in-house tools leads to delays, higher costs, and missed opportunities. Many hardware teams attempt to develop their own solutions, but these efforts often divert valuable resources away from core innovation.

Meridian and Plaquette expand your design capabilities, combining AI-driven exploration with realistic hardware simulation. They explore alternatives, evaluate them under your hardware’s errors and constraints, and identify the most promising designs for your device.

MERIDIAN

Purpose-built AI for fault-tolerant quantum computing

Models your device's errors, connectivity and native gates

Explores complete architectures, from codes to circuits

Validates every candidate design with Plaquette simulation

Delivers resource counts, performance estimates and a decision record

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Why hardware teams choose Plaquette

Build for reality, not just theory

Get Actionable Insights for Real Hardware

Make design decisions with confidence by understanding how 20+ real-world imperfections, from leakage to overrotation, impact your logical qubits.

Accelerate Your Path to Fault Tolerance

Run complex simulations and generate threshold plots in hours, not weeks, enabling rapid design iteration to stay ahead of the competition.

Reduce Costs and Stay Focused

Avoid expensive in-house fault-tolerance software, freeing your experts to innovate on hardware while cutting R&D costs and risks.

Learn why FTQC needs Plaquette See how Plaquette works in practice

PLAQUETTE

The Essential Tool for Quantum Hardware Teams

Clifford and beyond-Clifford simulators for accurate modelling

Vast library of fault-tolerance codes and decoders

Extensive error model library for all platforms or specify own

Flexible on-premises deployment for maximum IP protection

Comprehensive tutorials and documentation for seamless onboarding

User-friendly interface designed for accessibility and depth

Capability to conduct experiments on actual quantum hardware

Responsive customer support with experts in fault tolerance

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Trusted by industry leaders

Hear from our customers

Plaquette enables our team to quantitatively evaluate QLDPC codes and other error-correction strategies under realistic conditions, including the unique noise characteristics and hardware-specific parameters.

Pierre Desjardins, co-founder and CEO of C12.

The Plaquette photonics offering helps us design fault-tolerant architectures that are tailored for our hardware platform. And it does this at a small fraction of the cost of building and maintaining the software in-house.

Pim Venderbosch, head of software at QuiX Quantum, Europe's market leader in photonic quantum computing.

Plaquette is accelerating our FTQC efforts by enabling us to model realistic hardware imperfections, compare codes and decoders quantitatively, and iterate on architecture and control strategies.

Kazuhiro Nakashoji, CEO and Founder of Yaqumo.

Plaquette gives us a systematic, end‑to‑end way to test fault‑tolerance protocols ahead of hardware, identify the biggest performance levers early, and move faster with higher confidence.

Dr. Pavel Hrmo, CEO of ZuriQ.

Plaquette's ability to model over 20 hardware imperfections gives us valuable insights into refining our atom-photon architecture. This level of precision, combined with QC Design's expertise, provides us with a competitive advantage in developing quantum computers.

Dr. Michael Slutsky, Head of Theory Group at Quantum Source.

By adopting Plaquette to efficiently implement and optimize quantum error correction routines within our unique NFQC architecture, we can accelerate the path towards fault-tolerant performance and unlock early, meaningful real-world use cases.