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

Two-qubit silicon quantum processor with operation fidelity exceeding 99.
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DOI:
10.1126/sciadv.abn5130
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发表时间:
2022-04-08
期刊:
影响因子:
13.6
通讯作者:
Petta JR
Petta JR
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Mills AR;Guinn CR;Gullans MJ;Sigillito AJ;Feldman MM;Nielsen E;Petta JR

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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 greater than 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. Operation of a two-qubit silicon quantum processor with high all-around performance metrics is achieved.
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