Extended Data Fig. 5: Bell states between each pair of the nuclear spins.
From: Quantum error detection in a silicon quantum processor
a-f, the tomography of Bell state \(| {\Phi }^{+}\rangle\) for nuclear spin pairs N1N2, N1N3, N1N4, N2N3, N2N4, and N3N4, with measured Bell state fidelities of \({F}_{| {\Phi }^{+}\rangle ,12}=95.2\pm 1.2 \% ,\)\(\,{F}_{| {\Phi }^{+}\rangle ,13}=96.3\pm 1.1 \% ,\)\(\,{F}_{| {\Phi }^{+}\rangle ,14}=91.6\pm 1.6 \% ,\)\(\,{F}_{| {\Phi }^{+}\rangle ,23}=95.2\pm 1.0 \% ,\)\(\,{F}_{| {\Phi }^{+}\rangle ,24}=91.7\pm 1.5 \%\), and \({F}_{| {\Phi }^{+}\rangle ,34}=90.3\pm 1.2 \%\).
