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Primeur weekly 2014-02-10

The Cloud

European Cloud Testing Environment to be offered free of charge during 2014 ...

IBM opens access to SaaS portfolio to help African Universities with next-generation IT skills ...

IBM and Actifio add powerful new data virtualization solutions to IBM Cloud portfolio ...

Numericable Group teams with IBM's SoftLayer to develop a unique High Performance Cloud offer in France ...

HP Autonomy extends market-leading eDiscovery platform to the Cloud ...

IBM's SoftLayer and DataHotel help Japanese companies expand globally ...

IBM fuels innovation and entrepreneurship in Africa ...

Oracle extends the power of modern HR in the Cloud with updates to Oracle HCM Cloud ...

Desktop Grids

New CONVECTOR project studies mechanical engineering problems ...

EuroFlash

MSc in High Performance Computing organized at Edinburgh Parallel Computing Centre ...

PRACE Preparatory Access passes 3-year cap in bloom ...

EPSRC calls for Quantum Technology Hubs to put UK in super position ...

2nd International Conference on Research Infrastructures to launch Call for Contributions ...

Netherlands joins international Elixir Consortium on biological data ...

USFlash

IBM Brings Watson to Africa ...

SGI and Cognilytics partner to bring advanced analytics to enterprise Big Data ...

Mellanox releases Ethernet Switch Application Programing Interface (API) to the community as part of the Open Ethernet initiative ...

Mellanox releases world's first 40 Gigabit Ethernet NIC based on Open Compute Project (OCP) designs ...

Mellanox announces launch of Mellanox Capital ...

Computer models help decode cells that sense light without seeing ...

Heavy metal in the early cosmos ...

Scientists use 'voting' and 'penalties' to overcome errors in quantum optimization ...

2013 International Science and Engineering Visualization Challenge winners announced ...

New IBM virtualization solution to speed Software Defined Networking deployments ...

NEC contributes Network Virtualization to OpenDaylight's Hydrogen release ...

Diamond defect boosts quantum technology ...

Oracle and Pluribus Networks collaborate on OpenStack plug-ins for Software Defined Networking products ...

Solving a 30-year-old problem in high mass star formation ...

IBM named an innovation leader in Big Data in Sub-Saharan Africa, notes Frost & Sullivan ...

Diamond defect boosts quantum technology

4 Feb 2014 Washington D.C. - New research shows that a remarkable defect in synthetic diamond produced by chemical vapour deposition allows researchers to measure, witness, and potentially manipulate electrons in a manner that could lead to new "quantum technology" for information processing. The study is published in the January 31, 2014, issue ofPhysical Review Letters.

Normal computers process bits, the fundamental ones and zeros, one at a time. But in quantum computing, a "qubit" can be a one or a zero at the same time. This duplicitous state can allow multitasking at an astounding rate, which could exponentially increase the computing capacity of a tiny, tiny machine.

An "NV-" centre can be created within a diamond's scaffold-like structure by replacing a missing carbon atom with a nitrogen atom (N) that has trapped an electron making the centre negatively charged. Scientists can monitor the centre's behaviour and thereby provide a window for understanding how electrons respond to different conditions. The centre has the potential to serve as a qubit in future quantum computers.

Electrons occupy different orbits around their atom and, by analogy, spin like the Earth. For the first time, Viktor Struzhkin and his team, led by Marcus Doherty of the Australian National University, observed what happens to electrons in these NV- centres under high-pressure and normal temperatures. Co-author of the study, Viktor Struzhkin at the Carnegie Institution for Science, explained: "Our technique offers a powerful new tool for analyzing and manipulating electrons to advance our understanding of high-pressure superconductivity, as well as magnetic and electrical properties."

Viktor Struzhkin and team subjected single-crystal diamonds to pressures up to 600,000 times atmospheric pressure at sea level (60 gigapascals, GPa) in a diamond anvil cell and observed how electron spin and motion were affected. They optically excited the NV- centres with light and scanned microwave frequencies in a process called optically detected magnetic resonance to determine any changes. The NV- centre is very sensitive to magnetic fields, electrical fields, and stress.

Until now, researchers thought that the orbits of the electrons that contribute to the defect's electronic structure and spin dynamics were localized to the area immediately surrounding the vacancy. Marcus Doherty explained: "Our team found instead that the electrons also orbit more distant atoms and that the span of their orbits contract with increasing pressure."

In addition to overturning previous beliefs about the electron orbits, the researchers found a sensitive means to measure pressure. This method can detect changes in pressure of about 10 atmospheres in one second, even up to pressures of 500,000 atmospheres (50 GPa).

"This work demonstrates that defects in diamond have great potential as quantum sensors of high pressure phenomena and, conversely, that high pressure can be employed to study the quantum phenomena of the defects", remarked Marcus Doherty.

This work was supported by BES/DOE, DOE-NNSA, the Australian Research Council Discovery Project, Centre of Excellence for Quantum Computation and Communications Technology, and the Alexander von Humboldt Foundation.
Source: Carnegie Institution

Back to Table of contents

Primeur weekly 2014-02-10

The Cloud

European Cloud Testing Environment to be offered free of charge during 2014 ...

IBM opens access to SaaS portfolio to help African Universities with next-generation IT skills ...

IBM and Actifio add powerful new data virtualization solutions to IBM Cloud portfolio ...

Numericable Group teams with IBM's SoftLayer to develop a unique High Performance Cloud offer in France ...

HP Autonomy extends market-leading eDiscovery platform to the Cloud ...

IBM's SoftLayer and DataHotel help Japanese companies expand globally ...

IBM fuels innovation and entrepreneurship in Africa ...

Oracle extends the power of modern HR in the Cloud with updates to Oracle HCM Cloud ...

Desktop Grids

New CONVECTOR project studies mechanical engineering problems ...

EuroFlash

MSc in High Performance Computing organized at Edinburgh Parallel Computing Centre ...

PRACE Preparatory Access passes 3-year cap in bloom ...

EPSRC calls for Quantum Technology Hubs to put UK in super position ...

2nd International Conference on Research Infrastructures to launch Call for Contributions ...

Netherlands joins international Elixir Consortium on biological data ...

USFlash

IBM Brings Watson to Africa ...

SGI and Cognilytics partner to bring advanced analytics to enterprise Big Data ...

Mellanox releases Ethernet Switch Application Programing Interface (API) to the community as part of the Open Ethernet initiative ...

Mellanox releases world's first 40 Gigabit Ethernet NIC based on Open Compute Project (OCP) designs ...

Mellanox announces launch of Mellanox Capital ...

Computer models help decode cells that sense light without seeing ...

Heavy metal in the early cosmos ...

Scientists use 'voting' and 'penalties' to overcome errors in quantum optimization ...

2013 International Science and Engineering Visualization Challenge winners announced ...

New IBM virtualization solution to speed Software Defined Networking deployments ...

NEC contributes Network Virtualization to OpenDaylight's Hydrogen release ...

Diamond defect boosts quantum technology ...

Oracle and Pluribus Networks collaborate on OpenStack plug-ins for Software Defined Networking products ...

Solving a 30-year-old problem in high mass star formation ...

IBM named an innovation leader in Big Data in Sub-Saharan Africa, notes Frost & Sullivan ...