PsiQuantum launches Construct – A dedicated software suite for designing fault-tolerant quantum algorithms

PsiQuantum was founded on the premise that commercially valuable quantum computing requires error correction—and therefore systems on the order of a million physical qubits, supporting applications with billions of instructions. From the beginning, it was clear that no existing software could support that scale of fault-tolerant algorithmic research, so we tasked our Software and Quantum Applications teams with building their own tools. Today, we are introducing Construct, PsiQuantum’s software platform for designing, developing, and optimizing fault tolerant quantum algorithms. 

Over the past nine years, this group has grown to more than 60 researchers and developers, creating a suite of software that supports everything from circuit design to resource analysis. Along the way, we shared early components of this toolkit with the research community: Bartiq and QREF. 

Today, we are introducing Construct, PsiQuantum’s algorithm development platform, purpose-built for the scale and complexity of fault-tolerant quantum computing. Construct includes Circuit Designer, a visual editor for prototyping and documenting circuits; Workbench, a Python library for developing algorithms that span billions of operations across hundreds of qubits; and the Resource Analyzer, which breaks down algorithm costs to identify bottlenecks and optimization opportunities. Through its Quantum Development Environment (QDE), Construct allows developers to code directly from their browsers via VSCode or Jupyter, without local setup. 

We are beginning to share Construct through our Early Access Program (EAP). Partners across industry, government, and academia will use the platform to explore their own fault-tolerant algorithm research, providing feedback that will shape its evolution. We are also opening a limited number of seats to the broader research community during this stage. Because Construct is designed for experts, access is being prioritized for researchers who can take full advantage of its capabilities. 

We’re proud to share our teams’ work with the broader community and to see Construct serve as the bridge between today’s research and the real-world applications that will run on our first commercial quantum systems.