Purpose-built software for fault-tolerant quantum computing

Fault-tolerant quantum computing (FTQC) requires software that can operate on an unprecedented scale. PsiQuantum’s software was built to meet this challenge: tools that empower researchers, developers, and enterprises to design useful FTQC algorithms, develop their circuits, estimate their resources, and prepare for the arrival of the first generation of fault-tolerant hardware.  

These tools have transformed PsiQuantum’s own algorithmic R&D, reducing workflows from months to days, and are now being made available to the broader community through a combination of both open-access and Construct, our enterprise-grade integrated development environment. 

PsiQuantum’s software suite

PsiQuantum’s FTQC software is tailored for how quantum developers actually work. Whether you’re illustrating circuits for a publication, building a full-scale algorithm in Python, or estimating whether your method will run on a FTQC machine, our tools are designed to work together to guide you through each stage of development. Our enterprise offering, Construct, brings these components together in a fully integrated platform, while our open-access tools enable broad research community engagement. 

Design 01

Tools to visualize, share, and communicate algorithmic ideas

Design Graphic
Develop 02

Libraries and environments to write, simulate, and optimize FTQC algorithms

Develop Graphic
Optimize 03

Tools to estimate and understand algorithmic resources at FTQC scales

Optimize Graphic

Construct

PsiQuantum’s integrated platform for FTQC algorithm developers 

Construct is our integrated software platform that unifies all our algorithmic design, development, and optimization tools into a single, collaborative workspace. Designed to support enterprise research programs, government ecosystem initiatives, and academic teams, Construct provides secure cloud-hosted storage, a dedicated Quantum Development Environment, resource analysis, powerful visualization tools, and learning modules for training new FTQC developers. 

Open source & open access tools

    • A free and open-access version of our Circuit Designer tool 

    • Prototype, refine, and visualize fault tolerant quantum algorithms faster in a web application

    • Easily share circuit diagrams and plug them into your research papers 

    Get access

    • A standard, open format for representing FTQC algorithms for resource estimation.

    QREF on GitHub

    • Automates the complex, error-prone process of estimating FTQC resource requirements.  

    • Generate symbolic (i.e. mathematical) expressions for an algorithm’s resource requirements 

    • Understand how an algorithm’s cost scales for different problem instance sizes 

    Bartiq on GitHub

We believe open formats, transparent tooling, and shared libraries are essential to solving the “100-page paper problem” (the lack of standard, reproducible ways to express and evaluate FTQC algorithms). By making QREF and Bartiq publicly available, we aim to strengthen the community’s collective capability and accelerate progress.