Publikation: Resonantly driven CNOT gate for electron spins
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2018
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Zajac, David M.
Sigillito, Anthony J.
Borjans, Felix
Taylor, Jacob M.
Petta, Jason R.
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Science. 2018, 359(6374), pp. 439-442. ISSN 0036-8075. eISSN 1095-9203. Available under: doi: 10.1126/science.aao5965
Zusammenfassung
Single-qubit rotations and two-qubit CNOT operations are crucial ingredients for universal quantum computing. Although high-fidelity single-qubit operations have been achieved using the electron spin degree of freedom, realizing a robust CNOT gate has been challenging because of rapid nuclear spin dephasing and charge noise. We demonstrate an efficient resonantly driven CNOT gate for electron spins in silicon. Our platform achieves single-qubit rotations with fidelities greater than 99%, as verified by randomized benchmarking. Gate control of the exchange coupling allows a quantum CNOT gate to be implemented with resonant driving in ~200 nanoseconds. We used the CNOT gate to generate a Bell state with 78% fidelity (corrected for errors in state preparation and measurement). Our quantum dot device architecture enables multi-qubit algorithms in silicon.
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ZAJAC, David M., Anthony J. SIGILLITO, Maximilian RUSS, Felix BORJANS, Jacob M. TAYLOR, Guido BURKARD, Jason R. PETTA, 2018. Resonantly driven CNOT gate for electron spins. In: Science. 2018, 359(6374), pp. 439-442. ISSN 0036-8075. eISSN 1095-9203. Available under: doi: 10.1126/science.aao5965BibTex
@article{Zajac2018Reson-41552,
year={2018},
doi={10.1126/science.aao5965},
title={Resonantly driven CNOT gate for electron spins},
number={6374},
volume={359},
issn={0036-8075},
journal={Science},
pages={439--442},
author={Zajac, David M. and Sigillito, Anthony J. and Russ, Maximilian and Borjans, Felix and Taylor, Jacob M. and Burkard, Guido and Petta, Jason R.}
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<dcterms:abstract xml:lang="eng">Single-qubit rotations and two-qubit CNOT operations are crucial ingredients for universal quantum computing. Although high-fidelity single-qubit operations have been achieved using the electron spin degree of freedom, realizing a robust CNOT gate has been challenging because of rapid nuclear spin dephasing and charge noise. We demonstrate an efficient resonantly driven CNOT gate for electron spins in silicon. Our platform achieves single-qubit rotations with fidelities greater than 99%, as verified by randomized benchmarking. Gate control of the exchange coupling allows a quantum CNOT gate to be implemented with resonant driving in ~200 nanoseconds. We used the CNOT gate to generate a Bell state with 78% fidelity (corrected for errors in state preparation and measurement). Our quantum dot device architecture enables multi-qubit algorithms in silicon.</dcterms:abstract>
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