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Primeur weekly 2012-12-10

The Cloud

Bull awarded for best Private Cloud project ...

Bull launches a new private Cloud data protection service ...

Bull extends its Le cloud by Bull offering, to help organisations reap the full benefit of the Cloud ...

Drag-and-Drop DNA: Novel technique aiding development of new cancer drugs ...

Galaxy on Cloud ...

IBM expands the power of social business with new Cloud and mobile advances ...

Oracle unveils Cloud and consolidation capabilities for Oracle SPARC SuperCluster ...

Desktop Grids

Call for Proposals for Open PhD Competition in Extreme Citizen Science ...

Crucial step in AIDS virus maturation simulated for first time ...

EuroFlash

SMB Engys buys hosted server cluster ...

HP harnesses the power of Big Data with new information optimization solutions ...

HP extends Converged Cloud Portfolio for hybrid delivery environments ...

HP redefines storage simplicity with single architecture for enterprises of all sizes ...

Sogeti consolidates client delivery centre infrastructure seeking business growth with IBM PureSystems ...

University of Manchester is celebrating supercomputing 50 years on ...

projectiondesign F32 projectors visualize the future for Petrobras Research Centres ...

Bismuth provides perfect dance partners for quantum computing qubits ...

USFlash

BP to build U.S. facility to house largest commercial research supercomputer in the world ...

Eurocom ships world's first 8-Core Intel Xeon E5-2690 based 12lbs supercomputer laptop ...

HP acknowledges global mission-critical computing innovators ...

Nextra Teleservices calls for IBM PureSystems over HP to deliver new high-speed broadband services in India ...

University of Kentucky takes academic supercomputing to next level ...

NCAR Officials to address supercomputer allocation use in 2013 ...

Interactive One connects with Oracle Database Appliance to meet high-traffic demands ...

Raritan announces first industry standard 802.11 Wi-Fi solution for intelligent power and environment ...

Grant creates science demilitarized zone at San Diego State University ...

Bismuth provides perfect dance partners for quantum computing qubits

2 Dec 2012 Warwick - New research has demonstrated a way to make bismuth electrons and nuclei work together as qubits in a quantum computer. The discovery, published inNature Materials, takes us a key step further to creating practical quantum computing which could tackle complex programmes that would otherwise take the lifetime of the universe to finish. The collaboration partners are based in the University of Warwick, UCL, ETH Zurich and the USA Sandia National Labs.

Information on our normal computers is stored as bits, which are either ones or zeros. Quantum bits work differently in that each quantum bit can try out being a one and a zero at the same time, which makes them much more powerful for solving certain problems.

Researchers have explored influencing the direction of spin in electrons to create those states but this approach has had its challenges.

Dr. Gavin Morley from the University of Warwick's Department of Physics, stated: "Bismuth atoms in silicon crystals are great at working as quantum bits. Each bismuth atom has a spare electron, which has a 'spin' that can be influenced by magnets. If we put the electron into a magnet, it lines up with the magnetic field, behaving like a compass needle. We can control the direction that the electron is pointing in, using microwaves. Microwaves let us flip the direction the electron is pointing in, and these 'up and down' directions are what constitute the 'one and zero' in our quantum bit."

"Unfortunately, our electron is constantly prone to interference from nearby atoms that are out of our control. And the more time we waste, the greater the chance that our poor electron will suffer from interference, making it unusable to us."

"Now, this electron is coupled to the bismuth nucleus, which has its own spin: a smaller compass needle. Using this as an extra quantum bit and flipping it at the same time as our electron, would really help out. We can control this smaller compass needle too, but as it's smaller, it takes longer to control, and we need to use radiowaves instead of microwaves to do this."

"The good news is that as it's slow to respond, our bismuth nucleus's smaller compass needle suffers less from interference by nearby rogue atoms than our electron's larger compass needle. Unfortunately in the time we spend controlling our bismuth nucleus, these rogue atoms interfere with our electron."

"However we found that if we reduce the magnetic field just enough, then the electron and the nucleus become hybridized. Our new experiments at ETH Zurich show that through hybridisation, we can flip both compass needles easily using microwaves."

Dr. Morley compares it to the magnetic resonance imaging we find in hospitals. He stated: "MRI works by controlling the nuclear spins in your body. We have hybridized electron and nuclear spins and found that this makes it easier to control them. It's an easy new way to make slow and fast quantum bits work together. There are lots more challenges to face before anyone has a working computer with enough quantum bits to be useful, but with this hybridization as part of a computer's design, we are one step closer."

The paper entitled "Quantum control of hybrid nuclear–electronic qubits" is published inNature Materials, doi: 10.1038/NMAT3499 (2012) and is by Gavin W. Morley, Petra Lueders, M. Hamed Mohammady, Setrak J. Balian, Gabriel Aeppli, Christopher W.M. Kay, Wayne M. Witzel, Gunnar Jeschke & Tania S. Monteiro.
Source: University of Warwick

Back to Table of contents

Primeur weekly 2012-12-10

The Cloud

Bull awarded for best Private Cloud project ...

Bull launches a new private Cloud data protection service ...

Bull extends its Le cloud by Bull offering, to help organisations reap the full benefit of the Cloud ...

Drag-and-Drop DNA: Novel technique aiding development of new cancer drugs ...

Galaxy on Cloud ...

IBM expands the power of social business with new Cloud and mobile advances ...

Oracle unveils Cloud and consolidation capabilities for Oracle SPARC SuperCluster ...

Desktop Grids

Call for Proposals for Open PhD Competition in Extreme Citizen Science ...

Crucial step in AIDS virus maturation simulated for first time ...

EuroFlash

SMB Engys buys hosted server cluster ...

HP harnesses the power of Big Data with new information optimization solutions ...

HP extends Converged Cloud Portfolio for hybrid delivery environments ...

HP redefines storage simplicity with single architecture for enterprises of all sizes ...

Sogeti consolidates client delivery centre infrastructure seeking business growth with IBM PureSystems ...

University of Manchester is celebrating supercomputing 50 years on ...

projectiondesign F32 projectors visualize the future for Petrobras Research Centres ...

Bismuth provides perfect dance partners for quantum computing qubits ...

USFlash

BP to build U.S. facility to house largest commercial research supercomputer in the world ...

Eurocom ships world's first 8-Core Intel Xeon E5-2690 based 12lbs supercomputer laptop ...

HP acknowledges global mission-critical computing innovators ...

Nextra Teleservices calls for IBM PureSystems over HP to deliver new high-speed broadband services in India ...

University of Kentucky takes academic supercomputing to next level ...

NCAR Officials to address supercomputer allocation use in 2013 ...

Interactive One connects with Oracle Database Appliance to meet high-traffic demands ...

Raritan announces first industry standard 802.11 Wi-Fi solution for intelligent power and environment ...

Grant creates science demilitarized zone at San Diego State University ...