Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Quantum age edges closer

A colour-enhanced Scanning Electron Microscope image of a quantum dot
A colour-enhanced Scanning Electron Microscope image of a quantum dot

Abstract:
Superfast quantum computing is closer than ever following recent breakthroughs by an international team led by researchers from the University of New South Wales.

Quantum age edges closer

New South Wales | Posted on January 5th, 2010

Quantum computing relies on controlling and observing the behaviour of quantum particles - for instance individual electrons - to deliver enormous processing power.

In the two breakthroughs, written up in the international journals Nano Letters and Applied Physics Letters, researchers have for the first time demonstrated two ways to deliberately place an electron in a nano-sized device on a silicon chip.

The achievements set the stage for the next crucial steps of being able to observe and then control the electron's quantum state or "spin", to create a quantum bit.

Multiple quantum bits coupled together make up the processor of a quantum computer.

Professor Andrew Dzurak, the NSW Node Director of the Australian National Fabrication Facility at UNSW and Dr Andrea Morello, Manager of the Quantum Measurement and Control Chip Program at the ARC Centre of Excellence for Quantum Computer Technology, were leaders in the breakthrough work.

In research just published in Applied Physics Letters, the team, including PhD student Wee Han Lim, were able to accurately localise a single electron in silicon without it being attached to an atom. This "artificial atom" is known as a "quantum dot".

Dr Morello said the quantum dot avoided the difficulty of having to introduce single atoms in precise positions in a silicon chip.

In a separate project, published in the journal Nano Letters, the researchers, including PhD student Kuan Yen Tan, used "nature's own way" to localise electrons, by binding them to single atoms.

Quantum computing's power comes from the fact that electrons can have a "spin" pointing in one of two directions. The spin position can be used in the same way that zeroes and ones represent data in today's computers.

However electrons can also hold intermediate spin positions, or quantum states, which is what gives quantum computing its power.

While today's computers increase their power linearly with the number of bits added, quantum bits, when coupled together, can deliver an exponential increase in their ability to represent data.

The other leaders of the research team are Professor David Jamieson at the University of Melbourne, and Dr Mikko Möttönen at the Helsinki University of Technology. Students Wee Han Lim and Kuan Yen Tan have just completed their PhD degrees in the UNSW School of Electrical Engineering and Telecommunications.

####

About University of New South Wales
Established in 1949, UNSW has expanded rapidly and now has close to 40,000 students, including more than 7000 international students from over 130 different countries. The University offers more than 300 undergraduate and 600 postgraduate programs, and has developed an extensive network of alumni chapters throughout Asia.

For more information, please click here

Contacts:
Media Contact:
Professor Andrew Dzurak
02 9385 6311


Dr Andrea Morello
02 9385 4972


UNSW Media Office:
Peter Trute
02 9385 1933

Copyright © University of New South Wales

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Bruker Announces Acquisition of Nanoindenting Leader Hysitron: Acquisition strengthens Bruker’s leading position in nanoanalysis and nanomechanical materials characterization January 24th, 2017

New low-cost technique converts bulk alloys to oxide nanowires January 24th, 2017

News from Quorum: Experienced electron microscopist, David McCarthy, talks about working with Quorum and his use of their coaters and cryo-SEM preparation instrumentation January 24th, 2017

Tough aqua material for water purification: Decontamination of water with a robust and sustainable membrane assembled from 2 synergistically working components January 24th, 2017

Possible Futures

New low-cost technique converts bulk alloys to oxide nanowires January 24th, 2017

Harris & Harris Group Announces the Filing of Preliminary Proxy Materials Detailing Its Proposed Conversion From a BDC to a Registered Closed-End Fund January 24th, 2017

The speed limit for intra-chip communications in microprocessors of the future January 23rd, 2017

New, old science combine to make faster medical test: Nanoparticles and Faraday rotation allow faster diagnoses January 23rd, 2017

Quantum Computing

Seeing the quantum future... literally: What if big data could help you see the future and prevent your mobile phone from breaking before it happened? January 16th, 2017

NIST physicists 'squeeze' light to cool microscopic drum below quantum limit January 12th, 2017

First experimental proof of a 70 year old physics theory: First observation of magnetic phase transition in 2-D materials, as predicted by the Nobel winner Onsager in 1943 January 6th, 2017

Diamonds are technologists' best friends: Researchers from the Lomonosov Moscow State University have grown needle- and thread-like diamonds and studied their useful properties December 30th, 2016

Discoveries

New low-cost technique converts bulk alloys to oxide nanowires January 24th, 2017

Tough aqua material for water purification: Decontamination of water with a robust and sustainable membrane assembled from 2 synergistically working components January 24th, 2017

The speed limit for intra-chip communications in microprocessors of the future January 23rd, 2017

New, old science combine to make faster medical test: Nanoparticles and Faraday rotation allow faster diagnoses January 23rd, 2017

Announcements

Bruker Announces Acquisition of Nanoindenting Leader Hysitron: Acquisition strengthens Bruker’s leading position in nanoanalysis and nanomechanical materials characterization January 24th, 2017

New low-cost technique converts bulk alloys to oxide nanowires January 24th, 2017

News from Quorum: Experienced electron microscopist, David McCarthy, talks about working with Quorum and his use of their coaters and cryo-SEM preparation instrumentation January 24th, 2017

Tough aqua material for water purification: Decontamination of water with a robust and sustainable membrane assembled from 2 synergistically working components January 24th, 2017

Quantum Dots/Rods

Carbon dots dash toward 'green' recycling role: Rice scientists, colleagues use doped graphene quantum dots to reduce carbon dioxide to fuel December 18th, 2016

Two electrons go on a quantum walk and end up in a qudit: Russian scientists find a way to reliably connect quantum elements December 13th, 2016

Trickling electrons: Close to absolute zero, the particles exhibit their quantum nature November 10th, 2016

Notre Dame researchers find transition point in semiconductor nanomaterials September 6th, 2016

Quantum nanoscience

The speed limit for intra-chip communications in microprocessors of the future January 23rd, 2017

First experimental proof of a 70 year old physics theory: First observation of magnetic phase transition in 2-D materials, as predicted by the Nobel winner Onsager in 1943 January 6th, 2017

Quantum simulation technique yields topological soliton state in SSH model January 3rd, 2017

Diamonds are technologists' best friends: Researchers from the Lomonosov Moscow State University have grown needle- and thread-like diamonds and studied their useful properties December 30th, 2016

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project