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Researchers Enhance Quantum Computers with Error-Correcting Qubit Breakthrough

2/11/2026

Summary

Story summary

Researchers entangled two logical qubits while correcting errors, addressing the fragility of quantum computers.
Professor Andreas Wallraff led the study, which used surface codes and lattice surgery on superconducting qubits.
The approach spreads information across multiple physical qubits to correct bit- and phase-flip errors during operations.
The results pave the way for future quantum controlled-NOT gates and were published in Nature Physics on January 30, 2026.

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Story summary

Researchers entangled two logical qubits while correcting errors, addressing the fragility of quantum computers.
Professor Andreas Wallraff led the study, which used surface codes and lattice surgery on superconducting qubits.
The approach spreads information across multiple physical qubits to correct bit- and phase-flip errors during operations.
The results pave the way for future quantum controlled-NOT gates and were published in Nature Physics on January 30, 2026.