Building the Software Stack for Fault-Tolerant Quantum Error Correction

Entwine is a visual IDE built to simplify the development and exploration of topological quantum error correction (QEC) schemes. From logical state preparation to lattice surgery sequencing, Entwine provides an intuitive environment for designing, simulating, and comparing QEC circuits. Whether you are testing surface-code variants, visualising decoder behaviour, or sequencing error-corrected operations, Entwine helps you work at the level of systems, not just gates. It makes QEC workflows more transparent, programmable, and composable.

We have built Entwine to accelerate innovation in QEC. And now, we invite you to push it to its limits.

Welcome to the EL QEC

A global competition designed to bring together the next generation of fault-tolerance architects. At Entropica, our mission is to build the software stack for fault-tolerant quantum computing. This Challenge is our way to start opening that stack to the world.

As a participant, you will face a set of technical challenges and creative tasks based on real QEC problems. Your objective is to use Entwine to solve them. The Challenge is open to anyone, whether a student just starting their QEC journey, a seasoned researcher looking for better software solutions, or a developer curious about what comes after classical computing. This Challenge is for you.

Timeline

Prizes

• 1st Place – QEC Architect
  S$1,500 Cash Prize
  Fast-track interview opportunity with Entropica
  Spotlight feature on Entropica’s Medium page
  Premium Entropica swag kit

• 2nd Place – QEC Artisan
  S$1,000 Cash Prize
  Deep-dive session with Entropica’s Science Team
  Swag kit

• 3rd Place – QEC Explorer
  S$500 Cash Prize
  Community recognition
  Swag kit

How to Participate

1. Accept the Terms and Conditions and Sign up to use Entwine.
2. Access and use Entwine.
3. Complete the tasks using Entwine.
4. Submit your solutions by the deadline.

View Full Tasks and Scoring Criteria

Intro to Entwine Video

Entwine is powered by Entropica Loom under the hood, it is a suite of visualisers and tools designed to simplify the creation, manipulation, and execution of fault-tolerant circuits. Entwine can be extended to multiple quantum hardware stacks with unique lattice structures and connectivity, while also being plug-and-play and opaque to the downstream quantum software developer. Entwine is the path of least resistance between having a QPU and using the QPU productively.

Key features:

• Powered by Loom, Entropica’s software to map logical to physical circuits.
• No installation required (runs in browser).
• Visual, extensible interface supporting different hardware stacks.
• Off-the-shelf integration with Stim and Crumble.

Tasks Overview

Participants will complete three technical tasks:

• Concatenated Repetition Code.
• Translate logical operations into lattice surgery.
• Compare concatenated vs surface code performance.

All tasks must be completed using Entwine.

Link to full details: View Full Tasks and Scoring Criteria

Terms & Conditions

By signing up, you agree to the full terms and conditions:

• View Full Terms
• Download PDF version

Contacts