Reading Electrons

  • Author: ChemistryViews
  • Published: 08 October 2010
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Nature/Nature Publishing Group
thumbnail image: Reading Electrons

Silicon transistors continue to shrink to the size where quantum effects become important. Spin-based quantum computers could make use of these quantum effects if the spin state on an electron can be read accurately.

Andrea Morello and co-workers, University of New South Wales, Australia, have used spin-dependant tunneling to displace an electron to a location which was dependant on its spin state. A charge detector that was both electrostatically and tunnel-coupled to the electron site allowed accurate (> 90 %) and fast single-shot spin readouts.

The detector is compatible with current microelectronic technology as it is silicon-based. It consists of a silicon single-electron transistor with small regions of phosphorus donors implanted next to it.

Article Views: 2167

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from, please contact us first for permission. more

CONNECT: on Facebook on Twitter on YouTube on LinkedIn Sign up for our free newsletter

A product of ChemPubSoc Europe (16 European Chemical Societies)published by Wiley-VCH