|q⟩ Bad Qubits

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Multiple choice
Applying the lowering operator to 1,1|1,1\rangle gives S1,1=j(j+1)m(m1)1,0S_- |1,1\rangle = \sqrt{j(j+1) - m(m-1)} |1,0\rangle with j=1j=1, m=1m=1, so the normalization is N=2N = \sqrt{2}. The state 1,0=(1/N)(down,up+up,down)|1,0\rangle = (1/N)(|down,up\rangle + |up,down\rangle). What is the Clebsch-Gordan coefficient of up,down|up,down\rangle in 1,0|1,0\rangle?