Extended Data Fig. 11: Cumulative \({T}_{2}^{* }\) from repeated Ramsey experiments as function of B0.
From: Industry-compatible silicon spin-qubit unit cells exceeding 99% fidelity
a,b, Cumulative \({T}_{2}^{* }\) of qubit 1 and 2 as a function of increasing number of experiment repeats and total measurement time for a range of magnetic field amplitudes B0, respectively. Each experiment is defined by 101 shots of the Ramsey circuit with varying wait time. c,d, \({T}_{2}^{* }\) of qubit 1 and 2 as a function of lab time, respectively. Each data point is obtained by 100 repeated Ramsey experiments taking a total of approximately 15 s. We use real-time Larmor frequency feedback between Ramsey experiment repeats. Shaded error regions represent the 95% confidence level.
