Two-qubit silicon quantum processor with operation fidelity exceeding 99%

• URL: http://arxiv.org/abs/2111.11937v1
• Date: Tue, 23 Nov 2021 15:15:59 GMT
• Title: Two-qubit silicon quantum processor with operation fidelity exceeding 99%
• Authors: A. R. Mills, C. R. Guinn, M. J. Gullans, A. J. Sigillito, M. M. Feldman, E. Nielsen, and J. R. Petta
• Abstract summary: Two qubit Si/SiGe quantum processor demonstrated state preparation and readout with fidelity over 97%. Results highlight the potential of silicon spin qubits to become a dominant technology in the development of intermediate-scale quantum processors.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Silicon spin qubits satisfy the necessary criteria for quantum information processing. However, a demonstration of high fidelity state preparation and readout combined with high fidelity single- and two-qubit gates, all of which must be present for quantum error correction, has been lacking. We use a two qubit Si/SiGe quantum processor to demonstrate state preparation and readout with fidelity over 97%, combined with both single- and two-qubit control fidelities exceeding 99%. The operation of the quantum processor is quantitatively characterized using gate set tomography and randomized benchmarking. Our results highlight the potential of silicon spin qubits to become a dominant technology in the development of intermediate-scale quantum processors.

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