Modeling of electrostatic gate operations in the Kane solid state quantum computer

Chris I. Pakes; Cameron J. Wellard; David N. Jamieson; Lloyd C. L. Hollenberg; Steven D. Prawer; Andrew S. Dzurak; Alex R. Hamilton; Robert G. Clark

doi:10.1117/12.449136

21 November 2001 Modeling of electrostatic gate operations in the Kane solid state quantum computer

Chris I. Pakes, Cameron J. Wellard, David N. Jamieson, Lloyd C. L. Hollenberg, Steven D. Prawer, Andrew S. Dzurak, Alex R. Hamilton, Robert G. Clark

Author Affiliations +

Proceedings Volume 4591, Electronics and Structures for MEMS II; (2001) https://doi.org/10.1117/12.449136
Event: International Symposium on Microelectronics and MEMS, 2001, Adelaide, Australia

Abstract

The nuclear spin quantum computer proposed by Kane1 exploits as a qubit array ³¹P dopants embedded within a silicon matrix. Single-qubit operations are controlled by the application of electrostatic potentials via a set of metallic A gates, situated above the donors, on the silicon surface, that tune the resonance frequency of individual nuclear spins, and a globally applied RF magnetic field that flips spins at resonance. Coupling between qubits is controlled by the application of potentials via a set of J gates, between the donors, that induce an electron-mediated coupling between nuclear spins. We report the results of a study of the electric field and potential profiles arising within the Kane device from typical gate operations. The extent to which a single nuclear spin can be tuned independently of its neighbours, by operation of an associated A-gate, is examined and key design parameters in the Kane architecture are addressed. Implications for current fabrication strategies involving the implantation of ³¹P atoms are discussed. Solution of the Poisson equation has been carried out by simulation using a TCAD modeling package (Integrated Systems Engineering AG).

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Chris I. Pakes, Cameron J. Wellard, David N. Jamieson, Lloyd C. L. Hollenberg, Steven D. Prawer, Andrew S. Dzurak, Alex R. Hamilton, and Robert G. Clark "Modeling of electrostatic gate operations in the Kane solid state quantum computer", Proc. SPIE 4591, Electronics and Structures for MEMS II, (21 November 2001); https://doi.org/10.1117/12.449136

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