Algorithmic Qubits (Error-Corrected Logical Qubits)
Surface code quantum error correction · Other · 101 qubits · Cirq, Stim
Google Quantum AI's metric for measuring progress toward fault-tolerant quantum computing, based on the error suppression factor Lambda achieved by surface code logical qubits. On the Willow processor, a distance-7 surface code using 101 qubits achieved a logical error rate of 0.143% per cycle, with errors suppressed by a factor of 2.14 for each increase in code distance by 2, operating below the surface code threshold.
Google Quantum AI's metric for measuring progress toward fault-tolerant quantum computing, based on the error suppression factor Lambda achieved by surface code logical qubits. On the Willow processor, a distance-7 surface code using 101 qubits achieved a logical error rate of 0.143% per cycle, with errors suppressed by a factor of 2.14 for each increase in code distance by 2, operating below the surface code threshold.
First demonstration of quantum error correction operating below the surface code threshold, a critical milestone for fault-tolerant quantum computing.
Google Willow (superconducting)
Cirq, Stim