D
Daniel Keith
Researcher at University of New South Wales
Publications - 23
Citations - 637
Daniel Keith is an academic researcher from University of New South Wales. The author has contributed to research in topics: Qubit & Quantum computer. The author has an hindex of 10, co-authored 16 publications receiving 441 citations.
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A two-qubit gate between phosphorus donor electrons in silicon
TL;DR: A fast, high-fidelity two-qubit exchange gate between phosphorus donor electron spin qubits in silicon is demonstrated by creating a tunable exchange interaction between two electrons bound to phosphorus atom qubits.
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Two-electron spin correlations in precision placed donors in silicon.
Matthew A. Broome,S. K. Gorman,Matthew House,S. J. Hile,JG Joris Keizer,Daniel Keith,Charles D. Hill,Thomas F. Watson,W. J. Baker,Lloyd C. L. Hollenberg,Michelle Y. Simmons +10 more
TL;DR: The authors demonstrate the fabrication, manipulation and readout of a two qubit phosphorous donor device and determine the tunnel coupling between the 2P−1P system to be 200 MHz and provide a roadmap for the observation of two-electron coherent exchange oscillations.
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Charge noise, spin-orbit coupling, and dephasing of single-spin qubits
TL;DR: In this article, the authors derived an effective Hamiltonian for the combined action of noise and spin-orbit coupling on a single-spin qubit, identified the mechanisms behind dephasing, and estimated the free induction decay de-phasing times T2* for common materials such as Si and GaAs.
Journal ArticleDOI
Spin read-out in atomic qubits in an all-epitaxial three-dimensional transistor
Matthias Koch,JG Joris Keizer,Prasanna Pakkiam,Daniel Keith,Matthew House,Eldad Peretz,Michelle Y. Simmons +6 more
TL;DR: This work demonstrates single-shot spin read-out with 97.9% measurement fidelity of a phosphorus dopant qubit within a vertically gated single-electron transistor with <5 nm interlayer alignment accuracy and ensures the formation of a fully crystalline transistor using just two atomic species: phosphorus and silicon.
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Single-Shot Spin Readout in Semiconductors Near the Shot-Noise Sensitivity Limit
TL;DR: In this article, highly sensitive detectors can read the state of a single spin qubit in microseconds with 97% accuracy, providing a realistic path toward robust error correction in silicon-based quantum computation.