Theoretical comparison of three CZ-gate schemes for 171Yb ions in YVO4 shows photon-interference protocol has best fidelity scaling with cooperativity while magnetic dipolar offers fast deterministic operation if ions can be localized closely.
For clar- ity, we add that the ideal Hamiltonian evolution considered in the computation of Equation (S32), is the Z ⊗ Z interaction term together with the free Hamiltonian
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Comparing the performance of practical two-qubit gates for individual $^{171}$Yb ions in yttrium orthovanadate
Theoretical comparison of three CZ-gate schemes for 171Yb ions in YVO4 shows photon-interference protocol has best fidelity scaling with cooperativity while magnetic dipolar offers fast deterministic operation if ions can be localized closely.