Fig. 3: Single-qubit performance.
From: High-fidelity spin qubit operation and algorithmic initialization above 1 K
a, Relaxation time, T1, of different states as a function of temperature from 0.14 K to 1.4 K in different charge configurations for Q1, Q2. b, Dephasing times, \({T}_{2}^{* }\) and \({T}_{2}^{{\rm{Hahn}}}\), as a function of temperature from 0.14 K to 1.4 K in different charge configurations for Q1. c, Single-qubit noise PSD of Q1 based on the CPMG protocol44,45 at different temperatures at B0 = 0.79 T. d, Single-qubit Clifford gate fidelity as a function of B0 from 50 mT to 1 T at T = 1.2 K in different charge configurations for Q1. e, Single-qubit Clifford gate fidelity as a function of temperature at B0 = 0.4 T with the one-electron configuration. f, Demonstration of a dressing protocol, the SMART protocol on Q1 (ref. 8) at B0 = 0.5 T and T = 1 K with fRabi = 1.44 MHz, showing periodical modulation optima. Error bars represent the 95% confidence level.
