Records
Silicon spin two-qubit gate above the fault-tolerance threshold
Silicon spin two-qubit gate above the fault-tolerance threshold in the Records: every value read on the maker's own pages, with its day.
- Measure
- Two-qubit gate fidelity — arxiv.org, read 20 October 2026
- Value
- Not confirmed: two readings disagree: 99.51 and 99.5
- Reported
- Not confirmed: two readings disagree: 2021-08-05 and 2022-01-19
- Method
- Not confirmed: two readings disagree: Here we demonstrate a two-qubit gate fidelity of 99.5 per cent, along with single-qubit gate fidelities of 99.8 per cent, in silicon spin qubits by fast electrical control using a micromagnet-induced gradient field and a tunable two-qubit coupling. and by fast electrical control using a micromagnet-induced gradient field and a tunable two-qubit coupling
- Paper or release
- Not confirmed: two readings disagree: https://arxiv.org/abs/2108.02626 and https://www.nature.com/articles/s41586-021-04182-y
- Peer reviewed
- Yes — www.nature.com, read 20 October 2026
Sources
- Fast universal quantum control above the fault-tolerance threshold in silicon (read 20 October 2026)
- Fast universal quantum control above the fault-tolerance threshold in silicon (read 20 October 2026)
- Fast universal quantum gate above the fault-tolerance threshold in silicon (read 20 October 2026)
- Scientists achieve key elements for fault-tolerant quantum computation in silicon spin qubits (read 20 October 2026)