Navigation Links
Single electron reader opens path for quantum computing
Date:9/27/2010

A team led by engineers and physicists at the University of New South Wales (UNSW) in Sydney, Australia, have developed one of the key building blocks needed to make a quantum computer using silicon: a "single electron reader". Their work was published today in Nature.

Quantum computers promise exponential increases in processing speed over today's computers through their use of the "spin", or magnetic orientation, of individual electrons to represent data in their calculations.

In order to employ electron spin, the quantum computer needs both a way of changing the spin state (write) and of measuring that change (read) to form a qubit the equivalent of the bits in a conventional computer.

In creating the single electron reader, a team of engineers and physicists led by Dr Andrea Morello and Professor Andrew Dzurak, of the School of Electrical Engineering and Telecommunications at UNSW, has for the first time made possible the measurement of the spin of one electron in silicon in a single shot experiment. The team also includes researchers from the University of Melbourne and Aalto University in Finland.

"Our device detects the spin state of a single electron in a single phosphorus atom implanted in a block of silicon. The spin state of the electron controls the flow of electrons in a nearby circuit," said Dr Morello, the lead author of the paper, Single-shot readout of an electron spin in silicon.

"Until this experiment, no-one had actually measured the spin of a single electron in silicon in a single-shot experiment."

By using siliconthe foundation material of conventional computersrather than light or the esoteric materials and approaches being pursued by other researchers, the device opens the way to constructing a simpler quantum computer, scalable and amenable to mass-production.

The team has built on a body of research that has put Australia at forefront of the race to construct a working quantum computer. In 1998 Bruce Kane, then at UNSW, outlined in Nature the concept for a silicon-based quantum computer, in which the qubits are defined by single phosphorus atoms in an otherwise ultra-pure silicon chip. The new device brings his vision closer.

"We expect quantum computers will be able to perform certain tasks much faster than normal computers, such as searching databases, modelling complex molecules or developing new drugs," says co-author Prof Andrew Dzurak. "They could also crack most modern forms of encryption."

"After a decade of work trying to build this type of single atom qubit device, this is a very special moment."

Now the team has created a single electron reader, they are working to quickly complete a single electron writer and combine the two. Then they will combine pairs of these devices to create a 2-bit logic gate the basic processing unit of a quantum computer.


'/>"/>

Contact: Peter Trute
p.trute@unsw.edu.au
61-293-851-933
University of New South Wales
Source:Eurekalert

Related biology technology :

1. Scientists observe single ions moving through tiny carbon-nanotube channel
2. Study measures single-molecule machines in action
3. Data Demonstrate ViaMetrics-E Improves Implantation Rates in Single Embryo Transfer IVF Cycles, A Growing Trend in Infertility Treatment
4. Stretching single molecules allows precision studies of interacting electrons
5. Æterna Zentaris: Publication in the Journal of the National Cancer Institute Demonstrates Perifosine Single Agent Potential in Neuroblastoma Tumors
6. Single-step technique produces both p-type and n-type doping for future graphene devices
7. Æterna Zentaris Partner Keryx Announces Positive Phase 2 Results for Perifosine as a Single Agent for the Treatment of Advanced Waldenstroms Macroglobulinemia
8. BioNanomatrix Awarded Supplemental Funding to Accelerate Commercialization of Innovative Single-Molecule Analyzer
9. Photo: Novartis Receives FDA Approval for Valturna(R), a Single-Pill Combination of valsartan and aliskiren, to Treat High Blood Pressure
10. Laser pulses control single electrons in complex molecules
11. Single-molecule technique captures calcium sensor calmodulin in action
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/10/2016)... Charlotte, NC (PRWEB) , ... February 10, 2016 ... ... highly anticipated expansion to their comprehensive training and support program, Sonalink™ remote monitoring. ... Sonablate® HIFU procedures performed on Friday, February 5th, connecting Dr. Samuel Peretsman to ...
(Date:2/10/2016)... ... 10, 2016 , ... Curoverse announced today that the open-source, ... capabilities for managing and processing genomic and health data at petabyte scale. ... and analyzing genomic data,” said Adam Berrey chief executive officer at Curoverse. “Microsoft ...
(Date:2/10/2016)... La Jolla CA (PRWEB) , ... February 10, 2016 , ... ... of new agents for the treatment of Alzheimer’s disease, announced today it has been ... to February 18th at the Breakers in Palm Beach, Florida. The purpose of ...
(Date:2/9/2016)... PA (PRWEB) , ... February 09, 2016 , ... With ... the 2016 Wharton Health Care Business Conference will bring together over 500 top healthcare ... for an industry in transformation. The conference, organized by MBA students of the University ...
Breaking Biology Technology:
(Date:1/21/2016)... --> ... report "Emotion Detection and Recognition Market by Technology (Bio-Sensors, NLP, ... Voice Recognition and Others), Services, Application Areas, End ... published by MarketsandMarkets, the global Emotion Detection and ... Billion by 2020, at a CAGR of 31.9%, ...
(Date:1/20/2016)... 20, 2016   MedNet Solutions , an innovative ... of clinical research, is pleased to announce the attainment ... are the result of the company,s laser focus on ... , it,s comprehensive, easy-to-use and highly affordable cloud-based ... Key MedNet growth achievements in 2015 include: ...
(Date:1/18/2016)... Jan. 18, 2016  Extenua Inc., a pioneering ... the use and access of ubiquitous on-premise and ... with American Cyber.  ... leading transformational C4ISR and Cyber initiatives in support ... latest proven technology solutions," said Steve Visconti ...
Breaking Biology News(10 mins):