Navigation Links
TU scientists in Nature: Better control of building blocks for quantum computer
Date:12/23/2010

Scientists from the Kavli Institute of Nanoscience at Delft University of Technology and Eindhoven University of Technology in The Netherlands have succeeded in controlling the building blocks of a future super-fast quantum computer. They are now able to manipulate these building blocks (qubits) with electrical rather than magnetic fields, as has been the common practice up till now. They have also been able to embed these qubits into semiconductor nanowires. The scientists' findings have been published in the current issue of the science journal Nature (23 December).

Spin

A qubit is the building block of a possible, future quantum computer, which would far outstrip current computers in terms of speed. One way to make a qubit is to trap a single electron in semiconductor material. A qubit can, just like a normal computer bit, adopt the states '0' and '1'. This is achieved by using the spin of an electron, which is generated by spinning the electron on its axis. The electron can spin in two directions (representing the '0' state and the '1' state).

Electrical instead of magnetic

Until now, the spin of an electron has been controlled by magnetic fields. However, these field are extremely difficult to generate on a chip. The electron spin in the qubits that are currently being generated by the Dutch scientists can be controlled by a charge or an electric field, rather than by magnetic fields. This form of control has major advantages, as Leo Kouwenhoven, scientist at the Kavli Institute of Nanoscience at TU Delft, points out: 'These spin-orbit qubits combine the best of both worlds. They employ the advantages of both electronic control and information storage in the electron spin.'

Nanowires

There is another important new development in the Dutch research: the scientists have been able to embed the qubits (two) into nanowires made of a semiconductor material (indium arsenide). These wires are of the order of nanometres in diameter and micrometres in length. Kouwenhoven: 'These nanowires are being increasingly used as convenient building blocks in nanoelectronics. Nanowires are an excellent platform for quantum information processing, among other applications.'


'/>"/>

Contact: Leo Kouwenhoven
l.p.kouwenhoven@tudelft.nl
31-152-786-064
Delft University of Technology
Source:Eurekalert  

Related biology technology :

1. Scientists reveal how biological activity is regulated in fruit fly and roundworm genomes
2. USDA scientists discover how foot-and-mouth disease virus begins infection in cattle
3. Pacific Biosciences and Harvard scientists decode genome of Haitian cholera pathogen
4. Nu Skin Scientists Present ageLOC Research at International Conference on Mitochondria
5. Scientists create highly ordered artificial spin ice using nanotechnology
6. NIH scientists show how anthrax bacteria impair immune response
7. Iowa State, Ames Laboratory scientists advance the understanding of the big getting bigger
8. PharmaNet to Present More Than 20 Posters at the 2010 American Association of Pharmaceutical Scientists Annual Meeting
9. Scientists produce transparent, light-harvesting material
10. Scientists perfect new nanowire technique
11. Scientists prepare for confined field trials of life-saving drought-tolerant transgenic maize
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
TU scientists in Nature: Better control of building blocks for quantum computer
(Date:9/21/2017)... ... (PRWEB) September 21, 2017 , ... ... and technical congress to review the latest knowledge on these products, which are ... speakers will discuss the impact of Biostimulants on Plant Nutrition, Abiotic Stresses, Plant ...
(Date:9/21/2017)... , ... September 21, 2017 , ... Lajollacooks4u welcomed the ... The organization, a worldwide society of professional women with high achievement in the ... its annual dinner. , Twelve members began with an olive oil tasting ...
(Date:9/20/2017)... Station, TX (PRWEB) , ... ... ... Services, LLC (IPS), a leading global provider of engineering, architecture, project controls, ... provider of prefabricated cleanrooms, today announced the unveiling of the iCON™ brand ...
(Date:9/20/2017)... ... September 20, 2017 , ... RoviSys, a leading independent provider ... opening of an office in Taipei, Taiwan. This new location allows RoviSys to ... new relationships in the region. Located in the Neihu area of Taipei, the ...
Breaking Biology Technology:
(Date:6/14/2017)... -- IBM (NYSE: IBM ) is introducing several innovative partner ... developing collaboration between startups and global businesses, taking place in ... event, nine startups will showcase the solutions they have built ... France is one of ... 30 percent increase in the number of startups created between ...
(Date:4/24/2017)... April 24, 2017 Janice Kephart ... with  Identity Strategy Partners, LLP (IdSP) , today ... without President Trump,s March 6, 2017 Executive ... , refugee vetting can be instilled with greater confidence, ... now, all refugee applications are suspended by until ...
(Date:4/13/2017)... According to a new market research report "Consumer IAM Market by Solution ... Authentication Type, Deployment Mode, Vertical, and Region - Global Forecast to 2022", ... 14.30 Billion in 2017 to USD 31.75 Billion by 2022, at a ... ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):