Software infrastructure for programmable fault-tolerant quantum computing
What we do
From Quantum Error Correction (QEC) design to hardware execution, one unified stack.
Entropica is building the software layer between quantum hardware and useful applications. Our tools help hardware teams and researchers design QEC systems, compile quantum programs into hardware-aware fault-tolerant representations, and package those programs for integration with real control stacks.
Design with Entwine and BlockForge. Compile with Loom. Deploy with Quilt.
Design
Entwine + BlockForge
The design environment for Loom
Entwine is a graphical Integrated Development Environment (IDE) for fault-tolerant circuit design, enabling users to build, run, and analyse QEC circuits within a single visual environment.
BlockForge is a library of verified, reusable fault-tolerant building blocks, from gate sets to arithmetic subroutines, with known resource costs and inherited correctness guarantees.
Both tools generate Loom-ready code, so everything designed here flows directly into the compiler.
Compile
Loom
Loom is Entropica's centrepiece product: a large-scale compiler for fault-tolerant quantum computing.
Loom takes logical-level quantum computations and turns them into fault-tolerant, by automating QEC code design, error correction injection, and physical-level translation.
AUTOMATES QEC CODE DESIGN AND ANALYSIS, ACCELERATING CODE-TO-THRESHOLD COMPUTATION.
TRANSLATES LOGICAL QEC CODE INSTRUCTIONS INTO HARDWARE-SPECIFIC FAULT-TOLERANT CIRCUITS
GENERATES HYBRID QUANTUM-CLASSICAL CODE READY FOR REAL CONTROL STACKS.
At the core of Loom is EKA, a hardware-agnostic data structure that carries full QEC context across every layer of the stack. From Sanskrit एक (eka, “one, first”), EKA is the single source of truth from algorithm to hardware. Fully serialisable, queryable, and programmable, ensuring nothing is lost between the compiler and the hardware.
Deploy
Quilt
Quilt packages fault-tolerant programs output by Loom into compact, contextual instructions that partner control stacks can unpack and run.
Quilt defines the hand-off from compilation to execution: how Loom’s hardware-aware outputs are represented, compressed, and passed to the lower control stack while preserving the information needed for faithful fault-tolerant execution.
Loom Design — The Open-Source QEC Toolkit
Built on top of Entwine and BlockForge, Loom Design is a free, open-source environment for learning and experimenting with fault-tolerant QEC. Visual enough for students, powerful enough for researchers.
Demonstration of a logical bell state preparation circuit in Loom Design with Stim simulation
DESIGN LATTICE SURGERY CIRCUITS VISUALLY — DRAG, DROP, RUN
SIMULATE NOISE, TEST FAULT TOLERANCE, BENCHMARK THRESHOLDS
EXPORT LOOM-READY CODE DIRECTLY INTO THE COMPILER STACK
Get in touch
We're working with hardware teams, researchers, and developers at the frontier of fault-tolerant quantum computing. If that's you, let's talk.