Navigation Links
Connecting the (quantum) dots
Date:2/26/2013

PITTSBURGHRecent research offers a new spin on using nanoscale semiconductor structures to build faster computers and electronics. Literally.

University of Pittsburgh and Delft University of Technology researchers reveal in the Feb. 17 online issue of Nature Nanotechnology a new method that better preserves the units necessary to power lightning-fast electronics, known as qubits (pronounced CUE-bits). Hole spins, rather than electron spins, can keep quantum bits in the same physical state up to 10 times longer than before, the report finds.

"Previously, our group and others have used electron spins, but the problem was that they interacted with spins of nuclei, and therefore it was difficult to preserve the alignment and control of electron spins," said Sergey Frolov, assistant professor in the Department of Physics and Astronomy within Pitt's Kenneth P. Dietrich School of Arts and Sciences, who did the work as a postdoctoral fellow at Delft University of Technology in the Netherlands.

Whereas normal computing bits hold mathematical values of zero or one, quantum bits live in a hazy superposition of both states. It is this quality, said Frolov, which allows them to perform multiple calculations at once, offering exponential speed over classical computers. However, maintaining the qubit's state long enough to perform computation remains a long-standing challenge for physicists.

"To create a viable quantum computer, the demonstration of long-lived quantum bits, or qubits, is necessary," said Frolov. "With our work, we have gotten one step closer."

The holes within hole spins, Frolov explained, are literally empty spaces left when electrons are taken out. Using extremely thin filaments called InSb (indium antimonide) nanowires, the researchers created a transistor-like device that could transform the electrons into holes. They then precisely placed one hole in a nanoscale box called "a quantum dot" and control
'/>"/>

Contact: B. Rose Huber
rhuber@pitt.edu
412-624-4356
University of Pittsburgh
Source:Eurekalert

Page: 1 2

Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... for crude 3-D glasses, polarized glasses, and shutter ... devices, used to trick the brain into perceiving ... obsolete with the introduction of new holography technology ... doctoral students Yuval Yifat, Michal Eitan, and Zeev ... nanoantennas that could be used for security as ...
(Date:1/15/2014)... "The interface is the device," Nobel laureate Herbert ... to be found at the junctures where layers ... of nanotechnology, the interfaces between layers of metal ... such high-tech favorites as spintronics, high-temperature superconductors, ferroelectrics ...
(Date:1/15/2014)... 2014 Look inside the new Preferred ... the lab, from fluid handling to instruments to supplies. ... when you order. , Preferred Solutions features a ... the L/S® model for precise flow control and dispensing ...
(Date:1/15/2014)... This webinar will focus on EMA and FDA ... biosimilars. , Regulatory frameworks are evolving many countries to ... complex nature of biopharmaceuticals makes the demonstration of biosimilarity ... Based on the specific aspects of biosimilar drug development ...
Breaking Biology Technology:Projecting a 3-dimensional future 2Projecting a 3-dimensional future 3A deeper look at interfaces 2Cole-Parmer Begins 2014 with the Release of Preferred Solutions 2Xtalks Life Sciences Webinar Examines Safety Assessment of Biosimilars 2
... The U.S. Food and Drug,Administration (FDA) has ... treatment for complicated intra-abdominal and complicated urinary,tract ... a wide range of Gram-positive(1) and Gram-negative(2),bacteria ... serious infections. DORIBAX belongs to a ...
... Oct. 15 It is with great privilege ... of John A.,Elefteriades, M.D., F.A.C.S. to its Board ... W.L. Glenn Professor of Cardiothoracic,Surgery and Chief of ... He serves as Co-Director of the Yale-New Haven ...
... ADELAIDE, Australia, Oct. 15 Ellex Medical Lasers,Limited ... and manufacture of,ophthalmic laser and ultrasound systems, announced ... McGuinness to its board of directors to,underpin the ... and a capital raising in the past twelve ...
Cached Biology Technology:FDA Approves DORIBAX(TM) for the Treatment of Complicated Intra-Abdominal and Complicated Urinary Tract Infections 2FDA Approves DORIBAX(TM) for the Treatment of Complicated Intra-Abdominal and Complicated Urinary Tract Infections 3FDA Approves DORIBAX(TM) for the Treatment of Complicated Intra-Abdominal and Complicated Urinary Tract Infections 4FDA Approves DORIBAX(TM) for the Treatment of Complicated Intra-Abdominal and Complicated Urinary Tract Infections 5Avery Biomedical Devices, Inc. Appoints Elefteriades to its Board of Directors 2John Marshall and Kevin McGuinness Appointed to Ellex Board 2
(Date:7/10/2014)... NEW YORK , June 27, 2014 /PRNewswire/ ... against Provectus Biopharmaceuticals, Inc. ("Provectus" or the "Company")(NYSE-MKT: ... action, filed in United States District Court, Middle ... Division, is on behalf of a class consisting ... otherwise acquired Provectus securities between December 17, 2013 ...
(Date:7/10/2014)... July 2, 2014 NXT-ID, Inc., (OTCQB: NXTD) a biometric authentication ... Mr. Gino Pereira was interviewed on July 1 ... Tampa Florida . Mr. Pereira discusses the company,s ... Harris and how the Wocket™ aims to replace a ... Cedric Harris tells Gino he has never ...
(Date:7/10/2014)... Fingerprint Cards, (FPC,s) new ... (DW). An Asian OEM has selected FPC1021 for a flagship ... August 2014.   FPC is proud to announce ... planned date for start of mass production in August 2014. ... 5M, for delivery in the first half of July. The ...
Breaking Biology News(10 mins):SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 2Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 4FPC Wins DW and Initial Ramp Order for FPC1021 Touch Sensor for Flagship Smartphone from Asian OEM 2
... test could alter the screening landscape for colorectal cancer, ... Cancer Research special conference on Colorectal Cancer: Biology to ... cancer is the third leading cause of cancer, and ... continue to undergo public colonoscopies in an effort to ...
... October 28, 2010 For Immediate Release A ... the Scripps Translational Science Institute has published a paper ... genetic variations that reveal whether people are predisposed to ... In our modern genetic age, the entire DNA sequences, ...
... team of scientists at the Institut de recherches cliniques ... of the Cytoskeletal Organization and Cell Migration research unit, ... cell motility. Their findings were published online today in ... Press group. This scientific breakthrough could eventually lead to ...
Cached Biology News:New test measures DNA methylation levels to predict colon cancer 2Scientists describe new approach for identifying genetic markers for common diseases 2Scientists describe new approach for identifying genetic markers for common diseases 3A recent IRCM breakthrough impacts cancer research 2
... The steadylite plus assay system ... assay sensitivity, Designed for batch-processing ... for higher density microplates such ... Odor free, Convenient storage conditions ...
... The versatile Promega Flipper® Racks are ... of your small tubes. These polypropylene racks ... choice for freezer storage. They may also ... Each rack is two-sided; one side accommodates ...
Sf9 cells derived from Spodoptera frugiperda ovarian cells (Sf21 cells) are commonly used to isolate and propagate recombinant AcMNPV viral stocks and to produce recombinant proteins....
...
Biology Products: