If quantum computers are to be useful in the near-term, they will require methods for remedying computational mistakes that arise from imperfect hardware. However, most error correction schemes are too computationally costly to implement on existing machines, as they require encoding a single bit of quantum information into thousands of physical qubits. The complexity of these schemes is prohibitive for existing and near-term quantum computers. In new work, Bálint Koczor of the University of Oxford, UK, presents a method for side-stepping error correction by reducing errors in the first place [1]. The new method should offer better scaling to larger devices than existing error correction codes.
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