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:5/6/2015)... 2015  Northwest Biotherapeutics (NASDAQ: NWBO) ("NW Bio"), a U.S. ... cancers, today announced that Linda Powers , NW Bio CEO, ... vaccine platform for solid tumor cancers and the Company,s multiple ...   , , , DATE: , , , ... , , , 12:15 PM EDT , , , ...
(Date:5/6/2015)... May 06, 2015 Park Systems ... NX-Hivac, the only high vacuum AFM system in the ... failure analysis semiconductor manufacturing. Park NX-Hivac is ideal for ... analysis solutions in highly doped semiconductor processing where more ... , The high vacuum scanning spreading resistance microscopy (SSRM) ...
(Date:5/6/2015)... Histogen, Inc., a regenerative medicine company ... grown under simulated embryonic conditions, will present new ... melanoma during the 2015 Society of Investigative Dermatology ... in Atlanta, GA. , Histogen has previously shown ... with anti-oncologic properties, with potential benefit in the ...
(Date:5/6/2015)... 06, 2015 The Remedy Group ... strategy for the specialty pharmacy industry, will be exhibiting, ... Armada Specialty Pharmacy Summit. The Summit will be held ... Vegas and is the largest annual gathering for the ... attendance, from pharmacy providers, pharma/biotech manufacturers, and payers, to ...
Breaking Biology Technology:NW Bio To Webcast, Live, at VirtualInvestorConferences.com On May 7 2NW Bio To Webcast, Live, at VirtualInvestorConferences.com On May 7 3Park Systems Introduces Park NX-Hivac, a High Vacuum SSRM AFM System for Optimal Results in Semiconductor Manufacturing Failure Analysis 2Park Systems Introduces Park NX-Hivac, a High Vacuum SSRM AFM System for Optimal Results in Semiconductor Manufacturing Failure Analysis 3Novel Immunomodulatory Treatment Induces Apoptosis in Melanoma 2The Remedy Group presenting at the 2015 Armada Specialty Pharmacy Summit: The Pitfalls to Growth and Maintaining the Patient Experience 2
... Corp. (TSX: HBP / Frankfurt: WKN 918864), ... Corp.,announces that at the Company,s Annual General Meeting ... the resolutions presented by,management, appointing KPMG LLP as ... Kay, Slawomir Majewski, and Gordon Lickrish as,directors, and ...
... Jan. 30 MiddleBrook,Pharmaceuticals, Inc. (Nasdaq: MBRK ... novel anti-infective products, today,announced that it has closed ... warrants, resulting in the receipt of $21 million ... the proceeds from the financing to support,the manufacture ...
... Jan. 30 /Xinhua-PRNewswire-FirstCall/ --,Kiwa Bio-Tech Products Group Corporation ... bio-enhanced feed products sold during the fourth,quarter of ... and increased,25% over the same period in the ... ("Kiwa Tianjin") is a joint-venture of Kiwa,and Tianjin ...
Cached Biology Technology:Helix BioPharma shareholders vote in favour of management 2MiddleBrook Pharmaceuticals Closes Private Placement of Common Equity Raising $21 Million 2MiddleBrook Pharmaceuticals Closes Private Placement of Common Equity Raising $21 Million 3Kiwa Bio-Tech Animal Feed Volume Increased 25% in Fourth Quarter of 2007 2
(Date:4/10/2015)... 2015 Research and Markets ( ... "Security Competitive Profiles - NEC" report to their ... NEC will continue to supply a range of IT ... a company focus on the development of a Big ... opportunities in the Asia-Pacific region ...
(Date:4/6/2015)... , Apr. 6, 2015 NXT-ID, Inc. (NASDAQ: ... biometric authentication company focused on the growing mobile ... provisional patent 62/143028 for MINIATURE, MULTI-PURPOSE ... TRANSFER  NXT-ID introduces a new revolutionary ... patent surrounds the use of miniature antenna modules ...
(Date:4/2/2015)... April 2, 2015 According to ... attributed to somewhat higher than 125 MSEK. This exceeds ... report 2014 that revenues for Q1 2015 would be ... reported for Q4 2014. The operating result for the ... The complete interim report will as previously communicated be ...
Breaking Biology News(10 mins):NEC Security Competitive Profile 2015 2NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 2NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 3NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 4Fingerprint Cards Revises Revenues for Q1 2015 2
... -- Rice University scientists have unveiled a revolutionary new ... into steam. The new "solar steam" method from Rice,s ... even produce steam from icy cold water. Details ... in ACS Nano . The technology has an ...
... after Hurricane Sandy hit, NJIT Professor Michel Boufadel was awarded ... of the storm on the New Jersey shoreline. The ... a team of eight researchers to the beaches of Raritan ... students is still fanning out over the shoreline and ...
... getting, when they select females for mating, according to a ... Wisconsin-Milwaukee in the US. His work, which is one of ... mating behaviors in a nocturnal anuran (frog or toad), is ... . Animals display a number of courtship behaviors and ...
Cached Biology News:Rice unveils super-efficient solar-energy technology 2Rice unveils super-efficient solar-energy technology 3NJIT civil engineer receives NSF grant to study storm's impact on Jersey Shore 2Vision stimulates courtship calls in the grey tree frog 2
... Cultures (ECACC) in conjunction with the Univeristy ... England, Bristol, UK, have produced standardised cell ... oestrogen and progresterone receptor assays. The slides ... fixed, breast cancer cell lines; MDA-MD-361, T47D, ...
kismet (dK-20)...
... potent TURBO DNase (patent pending) in the TURBO ... DNA removal capabilities. TURBO DNase is a recombinant, ... more efficient than wild type DNase I in ... DNase binds DNA substrates 6-fold more tightly than ...
...
Biology Products: