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12 papers · 2 filters
A Two Qubit Logic Gate in Silicon
M. Veldhorst, C. H. Yang, J. C. C. Hwang +9
Quantum computation requires qubits that can be coupled and realized in a scalable manner, together with universal and high-fidelity one- and two-qubit logic gates \cite{DiVincenzo…
Donor hyperfine Stark shift and the role of central-cell corrections in tight-binding theory
Muhammad Usman, Rajib Rahman, Joe Salfi +5
Atomistic tight-binding (TB) simulations are performed to calculate the Stark shift of the hyperfine coupling for a single Arsenic (As) donor in Silicon (Si). The role of the centr…
Coherent Control of a Single Silicon-29 Nuclear Spin Qubit
Jarryd J. Pla, Fahd A. Mohiyaddin, Kuan Y. Tan +6
Magnetic fluctuations caused by the nuclear spins of a host crystal are often the leading source of decoherence for many types of solid-state spin qubit. In group-IV materials, the…
An addressable quantum dot qubit with fault-tolerant control fidelity
M. Veldhorst, J. C. C. Hwang, C. H. Yang +8
Exciting progress towards spin-based quantum computing has recently been made with qubits realized using nitrogen-vacancy (N-V) centers in diamond and phosphorus atoms in silicon,…
Charge Offset Stability in Si Single Electron Devices with Al Gates
Neil M. Zimmerman, Chih-Hwan Yang, Nai Shyan Lai +2
We report on the charge offset drift (time stability) in Si single electron devices (SEDs) defined with aluminum (Al) gates. The size of the charge offset drift (0.15 ) is inter…
Circuit-quantum electrodynamics with direct magnetic coupling to single-atom spin qubits in isotopically enriched 28Si
Guilherme Tosi, Fahd A. Mohiyaddin, Hans Huebl +1
Recent advances in silicon nanofabrication have allowed the manipulation of spin qubits that are extremely isolated from noise sources, being therefore the semiconductor equivalent…