Navigation Links
Scientists create first electronic quantum processor
Date:6/28/2009

New Haven, Conn.A team led by Yale University researchers has created the first rudimentary solid-state quantum processor, taking another step toward the ultimate dream of building a quantum computer.

They also used the two-qubit superconducting chip to successfully run elementary algorithms, such as a simple search, demonstrating quantum information processing with a solid-state device for the first time. Their findings will appear in Nature's advanced online publication June 28.

"Our processor can perform only a few very simple quantum tasks, which have been demonstrated before with single nuclei, atoms and photons," said Robert Schoelkopf, the William A. Norton Professor of Applied Physics & Physics at Yale. "But this is the first time they've been possible in an all-electronic device that looks and feels much more like a regular microprocessor."

Working with a group of theoretical physicists led by Steven Girvin, the Eugene Higgins Professor of Physics & Applied Physics, the team manufactured two artificial atoms, or qubits ("quantum bits"). While each qubit is actually made up of a billion aluminum atoms, it acts like a single atom that can occupy two different energy states. These states are akin to the "1" and "0" or "on" and "off" states of regular bits employed by conventional computers. Because of the counterintuitive laws of quantum mechanics, however, scientists can effectively place qubits in a "superposition" of multiple states at the same time, allowing for greater information storage and processing power.

For example, imagine having four phone numbers, including one for a friend, but not knowing which number belonged to that friend. You would typically have to try two to three numbers before you dialed the right one. A quantum processor, on the other hand, can find the right number in only one try.

"Instead of having to place a phone call to one number, then another number, you use quantum mechanics to speed up the process," Schoelkopf said. "It's like being able to place one phone call that simultaneously tests all four numbers, but only goes through to the right one."

These sorts of computations, though simple, have not been possible using solid-state qubits until now in part because scientists could not get the qubits to last long enough. While the first qubits of a decade ago were able to maintain specific quantum states for about a nanosecond, Schoelkopf and his team are now able to maintain theirs for a microseconda thousand times longer, which is enough to run the simple algorithms. To perform their operations, the qubits communicate with one another using a "quantum bus"photons that transmit information through wires connecting the qubitspreviously developed by the Yale group.

The key that made the two-qubit processor possible was getting the qubits to switch "on" and "off" abruptly, so that they exchanged information quickly and only when the researchers wanted them to, said Leonardo DiCarlo, a postdoctoral associate in applied physics at Yale's School of Engineering & Applied Science and lead author of the paper.

Next, the team will work to increase the amount of time the qubits maintain their quantum states so they can run more complex algorithms. They will also work to connect more qubits to the quantum bus. The processing power increases exponentially with each qubit added, Schoelkopf said, so the potential for more advanced quantum computing is enormous. But he cautions it will still be some time before quantum computers are being used to solve complex problems.

"We're still far away from building a practical quantum computer, but this is a major step forward."


'/>"/>

Contact: Suzanne Taylor Muzzin
suzanne.taylormuzzin@yale.edu
203-432-8555
Yale University
Source:Eurekalert  

Related biology technology :

1. Scientists identify gene vital to early embryonic cells forming a normal heart and skull
2. Israeli scientists show bacteria can plan ahead
3. Ten Top Latin American Scientists Named 2009 Pew Fellows in the Biomedical Sciences
4. A*STAR scientists invent the worlds only controllable molecule gear of minuscule size of 1.2nm
5. Monsanto, BASF Scientists Disclose Discovery of Gene Conferring Drought Tolerance in Corn Plants
6. Scientists create metal that pumps liquid uphill
7. Abbott Named One of the Top 10 Companies for Scientists
8. Scientists demonstrate effect of confining dielectrics on semiconductor nanowire conductivity
9. Scientists determine the structure of highly efficient light-harvesting molecules in green bacteria
10. Scientists moving closer to artificial noses
11. Scientists discover dancing algae
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists create first electronic quantum processor
(Date:1/19/2017)... Switzerland (PRWEB) , ... January ... ... provider of advanced software solutions for pharmaceutical research and development (R&D), today ... expertise in omic data analysis and interpretation for the rapidly evolving field ...
(Date:1/19/2017)... Mass. , Jan. 19, 2017 AquaBounty ... focused on enhancing productivity in aquaculture and a majority-owned ... announces that it has completed the listing of its ... the equity subscription from Intrexon. "AquaBounty,s listing ... that will broaden our exposure to the U.S. markets ...
(Date:1/19/2017)... ... January 19, 2017 , ... DaVita ... full spectrum of drug and device development, and Prism Clinical Research , ... clinicians, today announced Verified Clinical Trials (VCT) has been selected by ...
(Date:1/19/2017)... Jan. 18, 2017 BD (Becton, Dickinson and Company) (NYSE: ... that it will host a live webcast of its Annual Meeting ... The webcast can be accessed from the BD ... through Tuesday, January 31, 2017. ... About BD BD is a global medical ...
Breaking Biology Technology:
(Date:1/4/2017)... LAS VEGAS , Jan. 4, 2017 /PRNewswire/ ... in performance biometric sensor technology, today announced the ... Benchmark™ sensor systems, the highly-accurate biometric sensor ... ® biometric technology, experience and expertise. The ... of Benchmark designed specifically for hearables, and Benchmark ...
(Date:12/22/2016)... VIEW, Calif. , Dec. 20, 2016  As part ... levels, 23andMe, the leading personal genetics company, recently released its ... Me . The book focuses on the topics of ... Next Generation Science Standards (NGSS) taught in elementary school classrooms ... second in a series by illustrator Ariana Killoran , ...
(Date:12/20/2016)... LONDON , Dec. 20, 2016 ... car sharing, rental and leasing is stoking significant ... of radio frequency technology, Bluetooth low energy (BLE), ... emerge as the next wave of wireless technologies ... vehicle access system to advanced access systems opens ...
Breaking Biology News(10 mins):