Physicists have achieved the critical threshold required for fault-tolerant quantum error correction using electron spin qubits manufactured on standard semiconductor production lines.
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Physicists have achieved the critical threshold required for fault-tolerant quantum error correction using electron spin qubits manufactured on standard semiconductor production lines.
The quest for practical quantum computing has cleared its most formidable physics obstacle. Researchers have demonstrated 99.9% two-qubit gate fidelity using electron spin qubits confined within silicon quantum dots—manufactured on standard 300mm industrial semiconductor cleanroom tooling.
The Error Correction Milestone
Surpassing 99.9% fidelity is the theoretical prerequisite for surface-code quantum error correction. This confirms that logical qubits can be formed from arrays of physical silicon qubits, opening the door to fault-tolerant quantum simulation of complex molecular catalysts and room-temperature superconductors.
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