Gullans, M.
, Mills, A.
, Guinn, C.
, Sigillito, A.
, Feldman, M.
, Erik, N.
and Petta, J.
(2022),
Two-qubit silicon quantum processor with operation fidelity exceeding 99%, Science Advances, [online], https://doi.org/10.1126/sciadv.abn5130, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=933912
(Accessed December 8, 2024)
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Two-qubit silicon quantum processor with operation fidelity exceeding 99%
Published
Author(s)
, Adam Mills, Charlie Guinn, Anthony Sigillito, Mayer Feldman, Nielsen Erik, Jason Petta
Abstract
Silicon spin qubits satisfy the necessary criteria for quantum information processing. However, precision is required to support error correction, namely high accuracy state preparation and readout as well as high fidelity single- and two-qubit control. We use two qubits in a six qubit Si/SiGe quantum processor to demonstrate, for the first time, state preparation/readout over 96% with both single- and two-qubit control fidelities above 99%. The operation of the quantum processor is quantitatively characterized using gate set tomography and randomized benchmarking protocols. Our results highlight the future potential of silicon spin qubits in the development of intermediate- scale quantum processors.Citation
Science Advances
Volume
8
Issue
14
Pub Type
Journals
Download Paper
Keywords
quantum computing, spin qubits, quantum process tomography
Citation
Issues
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Created April 6, 2022, Updated November 29, 2022