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Proceedings Paper

Nanoscale single-electron transistor architectures for single spin detection in solid state quantum computer devices
Author(s): Tilo Markus Buehler; Rolf Brenner; David J. Reilly; Alex R. Hamilton; Andrew S. Dzurak; Robert C. Clark
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Paper Abstract

Single-spin detection will be crucial for solid-state quantum computer architectures in which information is encoded in the spin-state of single nuclear or electron spins. The formidable problem of single-spin detection in a solid can be mapped to a more tractable problem of single-charge detection through spin-dependent electron transfer which may be observed using ultra-sensitive solid-state nanostructure electrometers. Here we describe a readout architecture using single electron transistors (SETs) that can detect the charge-state of two coupled metal dots, which simulates charge transfer in a two-quantum bit (qubit) spin system. This twin-SET architecture allows significant reduction of random charge noise by correlating two detector outputs, reducing the probability of readout errors in the quantum computer.

Paper Details

Date Published: 19 November 2001
PDF: 8 pages
Proc. SPIE 4590, BioMEMS and Smart Nanostructures, (19 November 2001); doi: 10.1117/12.454622
Show Author Affiliations
Tilo Markus Buehler, Univ. of New South Wales (Australia)
Rolf Brenner, Univ. of New South Wales (Australia)
David J. Reilly, Univ. of New South Wales (Australia)
Alex R. Hamilton, Univ. of New South Wales (Australia)
Andrew S. Dzurak, Univ. of New South Wales (Australia)
Robert C. Clark, Univ. of New South Wales (Australia)


Published in SPIE Proceedings Vol. 4590:
BioMEMS and Smart Nanostructures
Laszlo B. Kish; Erol C. Harvey; William B. Spillman, Editor(s)

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