quantum-computing

[qmeets talk] Building Quantum Error Correcting Codes with Quantum Lego

Quantiki

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⚡ Quantum Brief

Researchers introduced a modular "quantum lego" framework using tensor networks to systematically design and analyze quantum error-correcting codes by assembling simpler atomic building blocks. The method simplifies code construction by treating transversal gates as symmetries of these blocks, enabling easier discovery of exotic transversal gates compared to traditional classical-code quantization approaches. A key breakthrough is the creation of new codes supporting transversal non-Clifford gates, which are typically harder to implement fault-tolerantly in existing quantum error correction schemes. The framework also reduces overhead for fault-tolerant logical gates in established codes, potentially lowering resource demands for practical quantum computation. The talk, held as a 20-minute online seminar in May 2026, positions this approach as a pathway toward automated, efficient quantum code discovery.

[qmeets talk] Building Quantum Error Correcting Codes with Quantum Lego

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[qmeets talk] Building Quantum Error Correcting Codes with Quantum Lego Dates: Wednesday, May 20, 2026Web page: qmeetsRegistration deadline: Wednesday, May 20, 2026Submission deadline: Wednesday, May 20, 2026Abstract: Quantum error-correcting codes are central to fault-tolerant quantum computation. Yet useful codes are often complex, making them difficult to design and analyze systematically. In this talk, we introduce a modular framework — the quantum lego method — based on tensor networks, which enables the construction and analysis of arbitrary quantum codes over qubits or qudits by assembling simpler, atomic building blocks. We begin with a pedagogical introduction to the quantum lego framework and its general utility in quantum code design and coding theory. We then show that transversal gates act as symmetries of the atomic lego blocks, and that tracking how these symmetries propagate through the tensor network composed of the quantum lego blocks yields codes with exotic transversal gates. This is achieved with relative ease compared to traditional construction approaches based on “quantizing” classical codes. As a proof of principle, we demonstrate that this technique produces new codes admitting transversal non-Clifford gates, and reveals significant overhead reductions for fault-tolerant logical gates in existing codes. Together, these results open the door to more efficient, automated code discovery. [Online seminar] Format: Each talk will be 20 + 10 minutes, followed by 15 minutes of general discussion. Do you have speaker suggestions? Interested in a joint seminar? Let us know! Zoom: https://uni-ulm.zoom-x.de/j/64102804905?pwd=bagVBRbKUbQGLDjMDECQyaYZgM9e... Log in or register to post comments

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[qmeets talk] Building Quantum Error Correcting Codes with Quantum Lego

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