Abstract
Universal single-qubit gates are constructed from a basic Bloch rotation operator realized through nonadiabatic Abelian geometric phase. The driving Hamiltonian in a generic two-level model is parameterized using controllable physical variables. The fidelity of the basic geometric rotation operator is investigated in the presence of systematic error in control parameters, such as the driving pulse area and frequency detuning. Compared to a conventional dynamic rotation, the geometric rotation shows improved fidelity.
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