Records

Single ytterbium ion-qubit coherence beyond one hour

Single ytterbium ion-qubit coherence beyond one hour in the Records: every value read on the maker's own pages, with its day.

Measure: Coherence time — arxiv.org, read 20 October 2026
Value: Not confirmed: two readings disagree: 4235 and 5500
Reported: 1 August 2020 — arxiv.org, read 20 October 2026
Method: Not confirmed: The paper gives platform and experimental details, including the ion species and dynamical-decoupling technique, but I could not confirm a single sentence in the abstract or release that names both the platform and the technique behind this T2 figure, as required.
Paper or release: https://arxiv.org/abs/2008.00251 — arxiv.org, read 20 October 2026
Peer reviewed: Yes — arxiv.org, read 20 October 2026

Sources