Toward high-fidelity quantum information processing and quantum simulation with spin qubits and phonons
arxiv(2024)
摘要
We analyze the implementation of high-fidelity, phonon-mediated gate
operations and quantum simulation schemes for spin qubits associated with
silicon vacancy centers in diamond. Specifically, we show how the application
of continuous dynamical decoupling techniques can substantially boost the
coherence of the qubit states while increasing at the same time the variety of
effective spin models that can be implemented in this way. Based on realistic
models and detailed numerical simulations, we demonstrate that this decoupling
technique can suppress gate errors by more than two orders of magnitude and
enable gate infidelities below ∼ 10^-4 for experimentally relevant noise
parameters. Therefore, when generalized to phononic lattices with arrays of
implanted defect centers, this approach offers a realistic path toward
moderate- and large-scale quantum devices with spins and phonons, at a level of
control that is competitive with other leading quantum-technology platforms.
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