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:3/23/2017)... NetworkNewsWire Editorial Coverage  ... Cancer remains one of ... health care systems, in terms of costs and resources. However, ... the development of innovative and efficient therapies that demonstrate higher ... types of cancer treatments, a growing number of patients receiving ...
(Date:3/23/2017)... , March 23, 2017  Agriculture technology company ... A financing and note conversion to commercialize its Cool ... is focused on developing products that are simultaneously profitable ... million in the last 18 months. This latest round ... Bridge Venture Partners. The company,s primary ...
(Date:3/23/2017)... ... March 23, 2017 , ... Advanced Polymer ... hire of Dr. Sigmund “Sig” Floyd as Vice President ? Global Business Development. ... development activities. , “Dr. Floyd’s career has spanned 30 years in the chemicals ...
(Date:3/22/2017)... ... March 22, 2017 , ... Researchers face a fundamental ... samples to full-size tissues, bones, even whole organs to implant in people to ... blood deep into the developing tissue. , Current bioengineering techniques, including 3-D ...
Breaking Biology Technology:
(Date:3/1/2017)...  Aware, Inc. (NASDAQ: AWRE), a leading supplier of ... Moberg has resigned, effective March 3, 2017, as ... and Treasurer of Aware citing a desire to retire.  ... of the Board of Directors of Aware. ... and co-President, General Counsel has been named Chief Executive ...
(Date:2/26/2017)... 25, 2017  Securus Technologies, a leading provider ... public safety, investigation, corrections and monitoring, announces the ... "Too often, too many offenders return ... jails are trying to tackle this ongoing problem ... and family members. While significant steps are underway, Securus ...
(Date:2/16/2017)... 16, 2017  Genos, a community for personal ... has received Laboratory Accreditation from the College of ... to laboratories that meet stringent requirements around quality, ... processes. "Genos is committed to maintaining ... We,re honored to be receiving CAP accreditation," said ...
Breaking Biology News(10 mins):