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Steane 7-Qubit Code: Stabilizer Error Correction

Interactive 3D simulator of the Steane [[7,1,3]] CSS quantum error-correcting code: inject bit-flip and phase-flip noise onto 7 physical qubits, measure X- and Z-stabilizer syndromes, and watch automatic correction recover the logical qubit.

Geology & Earth Science2DModerate60 FPS📱 Mobile-adapted🌍 Earth

This simulation allows you to explore the fundamental principles of quantum error correction by manipulating qubits and observing their behavior within a working stabilizer code. It renders the Steane [[7,1,3]] CSS code — seven physical qubits protecting one logical qubit — arranged in 3D with color-coded stabilizer groups. Injecting X (bit-flip) and Z (phase-flip) Pauli noise, measuring the three X-type and three Z-type stabilizer generators, and decoding the resulting binary syndrome to apply a correction mirrors exactly how real fault-tolerant quantum processors mitigate the effects of decoherence, while also showing where a single round's built-in distance-3 limit breaks down into a logical error.

⚙ Under the hood

This simulation allows you to explore the fundamental principles of quantum error correction by manipulating qubits and observing their behavior within a simplified Bloch sphere environment. By strategically applying correction codes, you can mitigate the effects of decoherence and maintain the integrity of quantum computations.

Quantum Error CorrectionQubitsBloch Sphere

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install