Construction of a silicon-based solid state quantum computer

A. S. Dzurak, M. Y. Simmons, A. R. Hamilton, R. G. Clark, R. Brenner, T. M. Buehler, N. J. Curson, E. Gauja, R. P. Mckinnon, L. D. Macks, M. Mitic, J. L. O'Brien, L. Oberbeck, D. J. Reilly, S. R. Schofield, F. E. Stanley, D. N. Jamieson, S. Prawer, C. Yang, G. J. Milburn

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We discuss progress towards the fabrication and demonstration of a prototype silicon-based quantum computer. The devices are based on a precise array of 31P dopants embedded in 28Si. Fabrication is being pursued via two complementary pathways - a 'top-down' approach for near-term production of few-qubit demonstration devices and a 'bottom-up' approach for large-scale qubit arrays. The 'top-down' approach employs ion implantation through a multi-layer resist structure which serves to accurately register the donors to metal control gates and single-electron transistor (SET) read-out devices. In contrast the 'bottom-up' approach uses STM lithography and epitaxial silicon overgrowth to construct devices at an atomic scale. Techniques for qubit read-out, which utilise coincidence measurements on novel twin-SET devices, are also presented.

Original languageEnglish
Pages (from-to)82-95
Number of pages14
JournalQuantum Information and Computation
Issue numberSUPPL. 1
Publication statusPublished - 1 Dec 2001
Externally publishedYes


Dive into the research topics of 'Construction of a silicon-based solid state quantum computer'. Together they form a unique fingerprint.

Cite this