Find out about the
Ultracapacitor R&D
report from
Energy Research News


Phosphorous makes quantum memory

  October 27/November 3, 2008
Transfer a quantum bit from an electron to the nucleus of a phosphorous atom and back and you have the building block of a quantum computer memory chip.

A combination of microwaves and radio waves transfers information from an easily controlled but short-lived electron quantum bit to a phosphorous nucleus embedded in a silicon chip. The information lasts for more than a second -- a longtime for quantum computing -- and can be transferred back to the electron.

The technique brings chip-based quantum computers a step closer. Quantum computers have the potential to crack today's security codes and carry other tasks beyond the reach of today's computers.

Research paper:
Solid-State Quantum Memory Using the 31P Nuclear Spin
Nature, October 23, 2008

Researchers' homepages:
John J. L. Morton
Richard M. Brown
Brendon W. Lovett
Arzhang Ardavan
Thomas Schenkel
Eugene E. Haller
Joel W. Ager
S. A. Lyon

Related stories and briefs:
Positioned atoms advance quantum chips -- precursor research

Further info:
How It Works -- Quantum computing: qubits -- overview of quantum bits

Back to TRN October 27/November 3, 2008

Research Watch blog
View from the High Ground Q&A
How It Works

RSS Feeds:
News  | Blog

Ad links: Clear History

Buy an ad link

Home     Archive     Resources    Feeds    Glossary
Search     Research Orgs    Events Dir.      Researchers     Bookshelf
   Contribute      T-shirts etc.     Ad Finder

© Copyright Technology Research News 2000-2010. All rights reserved.