Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

The fight for the best quantum bit (qubit)

02.07.2008
Post Doc Henrik Ingerslev Jørgensen has come an important step closer to the quantum computer. The journal Nature Physics has just published the researcher’s groundbreaking discovery.

Our results give us, for the first time, the possibility to understand the interaction between just two electrons placed next to each other in a carbon nanotube. A groundbreaking discovery, which is fundamental for the creation of a quantum mechanical bit, a so-called quantum bit – the cornerstone of a quantum computer, explains Henrik Jørgensen, who is one of the many researchers competing on an international level to be the first to make a quantum bit in a carbon nanotube.

The ability to produce a quantum computer is still some years ahead in the future, the implementation will, however, mean a revolution within the computer industry. This is due to the quantum mechanical computation method, which quickly will be able to solve certain complicated calculations that on an ordinary computer would take more than the lifetime of the Universe to calculate.

Who will be the first?

Over the past years there has been a tremendously increasing interest in developing a quantum computer within the international world of researchers. The production of a quantum computer is enormously challenging and demands development of new theories and new technologies by research-groups all over the world. Henrik Jørgensen’s results have been developed in close collaboration with the Hitachi Cambridge Laboratory in England.

Adviser and Vice-Chairman at the Nano-Science Center, Professor Poul Erik Lindelof, says:

– We have been studying the quantum mechanical properties of carbon nanotubes for ten years, and today we are one of the leading laboratories within this field of research. I believe Henrik Jørgensen’s experimental work can prove to be just the right way forward.

Kasper Grove Rasmussen is joint author of the article. He says:

– We use carbon nanotubes due to their unique electronic and material properties and not least due to the absence of disturbing magnetism from the atom nuclei which is found in certain competing materials.

At present it is not possible to say which material will be the most suitable for the quantum computer, or who will be the first to realize a quantum bit in a carbon nanotube, but the researchers at the Nano-Science Center are a big step closer to the solution.

Henrik Ingerslev Jørgensen | alfa
Further information:
http://www.nano.ku.dk
http://www.nature.com/nphys/journal/v4/n7/pdf/nphys987.pdf

More articles from Physics and Astronomy:

nachricht From rocks in Colorado, evidence of a 'chaotic solar system'
23.02.2017 | University of Wisconsin-Madison

nachricht Prediction: More gas-giants will be found orbiting Sun-like stars
22.02.2017 | Carnegie Institution for Science

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>