306 citations · 1.3k across the 20 of their papers we have counts for
20 papers
High precision quantum control of single donor spins in silicon
Rajib Rahman, Cameron J. Wellard, Forrest R. Bradbury +4
The Stark shift of the hyperfine coupling constant is investigated for a P donor in Si far below the ionization regime in the presence of interfaces using Tight-binding and Band Mi…
A precise CNOT gate in the presence of large fabrication induced variations of the exchange interaction strength
M. J. Testolin, C. D. Hill, C. J. Wellard +1
We demonstrate how using two-qubit composite rotations a high fidelity controlled-NOT (CNOT) gate can be constructed, even when the strength of the interaction between qubits is no…
Cross-talk compensation of hyperfine control in donor qubit architectures
G Kandasamy, C J Wellard, L C L Hollenberg
We theoretically investigate cross-talk in hyperfine gate control of donor-qubit quantum computer architectures, in particular the Kane proposal. By numerically solving the Poisson…
A theoretical investigation into the microwave spectroscopy of a phosphorus-donor charge-qubit in silicon: Coherent control in the Si:P quantum computer architecture
C. J. Wellard, L. C. L. Hollenberg, S. Das Sarma
We present a theoretical analysis of a microwave spectroscopy experiment on a charge qubit defined by a P donor pair in silicon, for which we calculate Hamiltonian parameters…
Identifying a Two-State Hamiltonian in the Presence of Decoherence
Jared H. Cole, Andrew D. Greentree, Daniel K. L. Oi +3
Mapping the system evolution of a two-state system allows the determination of the effective system Hamiltonian directly. We show how this can be achieved even if the system is dec…
Optically induced spin to charge transduction in donor spin read-out
M. J. Testolin, Andrew D. Greentree, C. J. Wellard +1
The proposed read-out configuration D+D- for the Kane Si:P architecture[Nature 393, 133 (1998)] depends on spin-dependent electron tunneling between donors, induced adiabatically b…