IQM Quantum Computers has developed a new quantum error-correcting code that it says can reduce logical error rates by up to 1,000 times compared with the widely used surface code while requiring up to eight times fewer physical qubits.
The company said the new approach, called barbell codes, could help address one of the biggest challenges facing quantum computing: correcting errors quickly enough to enable large-scale, fault-tolerant machines.
Quantum computers are highly sensitive to noise, which can introduce errors during calculations. To overcome this, researchers use quantum error correction, a process that spreads information across multiple physical qubits to create more reliable logical qubits. However, existing methods often require large numbers of qubits and increasingly complex hardware.
According to IQM, its new code aims to improve both efficiency and practicality by lowering error rates while reducing the number of physical qubits needed to protect quantum information.
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