Quantifying the quantum gate fidelity of single-atom spin qubits in silicon by randomized benchmarking

Journal of Physics. Condensed Matter : an Institute of Physics Journal
Juha T MuhonenAndrea Morello

Abstract

Building upon the demonstration of coherent control and single-shot readout of the electron and nuclear spins of individual (31)P atoms in silicon, we present here a systematic experimental estimate of quantum gate fidelities using randomized benchmarking of 1-qubit gates in the Clifford group. We apply this analysis to the electron and the ionized (31)P nucleus of a single P donor in isotopically purified (28)Si. We find average gate fidelities of 99.95% for the electron and 99.99% for the nuclear spin. These values are above certain error correction thresholds and demonstrate the potential of donor-based quantum computing in silicon. By studying the influence of the shape and power of the control pulses, we find evidence that the present limitation to the gate fidelity is mostly related to the external hardware and not the intrinsic behaviour of the qubit.

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Citations

Mar 5, 2016·Nature Nanotechnology·Susan Coppersmith
May 2, 2016·Journal of Magnetic Resonance·Daniel K ParkRaymond Laflamme
Oct 30, 2016·Proceedings of the National Academy of Sciences of the United States of America·Erika KawakamiLieven M K Vandersypen
Aug 19, 2016·Science Advances·Kenta TakedaSeigo Tarucha
Nov 26, 2015·Science Advances·Arne LauchtAndrea Morello
Jan 18, 2018·Physical Review Letters·Timothy ProctorRobin Blume-Kohout
Sep 27, 2019·Nature·Yadav P KandelJohn M Nichol
Dec 9, 2017·Science·D M ZajacJ R Petta
Mar 19, 2015·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Steven R Schofield, Sven Rogge
Nov 9, 2016·Physical Review Letters·Richard KuengSteven T Flammia
Sep 8, 2017·Nature Communications·Guilherme TosiAndrea Morello
Jul 22, 2018·Science Advances·Samuel J HileMichelle Y Simmons
Apr 2, 2019·Physical Review Letters·Robin Harper, Steven T Flammia
Sep 17, 2020·Science Advances·Mateusz T MądzikAndrea Morello
Aug 7, 2017·Science Advances·Kevin J MorseStephanie Simmons
Aug 7, 2019·Physical Review Letters·Timothy J ProctorKevin Young
May 1, 2017·The Review of Scientific Instruments·Harald HomulleEdoardo Charbon
Dec 7, 2018·The Review of Scientific Instruments·Arne HollmannLars R Schreiber
May 16, 2019·Nature·W HuangA S Dzurak
May 15, 2018·Physical Review Letters·J MansirJ J L Morton
May 15, 2020·The Journal of Physical Chemistry Letters·Andrey N Chibisov, Mary Chibisova
Nov 23, 2021·Nano Letters·Wonill HaMatthew G Borselli

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