Single-atom writer a landmark for quantum computing

Operations on 20 September, 2012

Posted on behalf of the University of New South Wales

A research team led by Australian engineers has created the first working quantum bit based on a single atom in silicon, opening the way to ultra-powerful quantum computers of the future.

In a landmark paper published today in the journal Nature, the team describes how it was able to both read and write information using the spin, or magnetic orientation, of an electron bound to a single phosphorus atom embedded in a silicon chip.

“For the first time, we have demonstrated the ability to represent and manipulate data on the spin to form a quantum bit, or ‘qubit’,  the basic unit of data for a quantum computer,” says Scientia Professor Andrew Dzurak. “This really is the key advance towards realising a silicon quantum computer based on single atoms.”

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Tomorrow’s technology pioneers; diamond in your eyes and your blood and other stories

Sarah on 8 December, 2010

Wednesday 8 December 2010

Today’s stories from the physics conference in Melbourne include:

Tomorrow’s technology pioneers recognised today

  • From the laser to quantum optics
    Prof Kostya (Ken) Ostrikov (Kostya.Ostrikov@csiro.au), a CSIRO scientist who set the ground rules for constructing new materials atom by atom using collections of charged particles known as plasmas;
  • Teleportation
    Prof Hans-Albert Bachor (hans.bachor@anu.edu.au) from the Australian National University (ANU) whose work on the graininess or particle nature of light is leading to new technologies such as quantum encryption and teleportation;
  • Laser controllers
    A/Prof Robert Scholten (scholten@unimelb.edu.au), a University of Melbourne physicist who has established a thriving and profitable business which makes and exports laser controllers; and
  • Acoustics of music
    Prof Joe Wolfe (j.wolfe@unsw.edu.au) of the University of New South Wales, an expert on the acoustics of music whose multimedia learning resources are accessed about 60,000 times a day.

Also:
Diamond dust adds sparkle to medical imaging
Electronic paper makes itself
Bionic valves without the batteries
Invisible fibres disappearing soon
Acquiring a better feel for disease
Healthy and unhealthy brain states – what role does electrical conductivity play?
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Space storms, Aussies at the LHC, home computers find pulsars and more…

Operations on 7 December, 2010

7 December 2010

Here’s today’s stories from the physics congress in Melbourne.
Space storms threat to power and phones
Are solar flares damaging our ozone layer?
The future of nuclear science
Superconductors reveal their secrets
Dark matter: detecting the invisible
Pulsar found with 250,000 home computers
Lies, damn lies and climate change sceptics: what has really caused recent global warming?
Australians to play with the Large Hadron Collider

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A cubic kilometre ice telescope, silk for blood tests, stirring coffee and rocks…

Operations on 6 December, 2010

Stories today at the physics congress in Melbourne

A cubic kilometre of South Pole ice looking for dark matter
From the chaos of stirring coffee to stirring rocks and cleaning up polluted ground water
Silk microchips for instant blood tests
Diamond’s light touch
Enlightenment on a chip
A single electron reader for silicon quantum computing
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