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Primeur weekly 2011-11-07

The Cloud

Oracle named a leader in SOA Governance Magic Quadrant by Gartner analyst firm ...

Cerner selects Oracle Enterprise Manager to support new Cloud services ...

Gartner positions Oracle as a leader in the Magic Quadrant for Enterprise Application Servers ...

EuroFlash

Argonne National Labs selects Allinea DDT for Blue Gene and Linux - Debugging tools evolution to support petascale and exascale ...

Russian supercomputer developer and solution builder RSC joins European HPC association PROSPECT ...

PRACE grants 18 million compute hours for Finnish research groups - new call opens ...

IBM and ABB scientists collaborate to improve energy transmission for more efficient grids ...

Vestas Wind Systems turns to IBM Big Data Analytics for smarter wind energy ...

USFlash

K computer achieves goal of 10 Petaflops ...

University of Wisconsin–Madison home to weather-predicting supercomputer ...

IBM rolls out first solar array designed for high-voltage data centres and industrial use ...

HP shapes the future of extreme low-energy server technology ...

Appro reveals next generation, Xtreme-X supercomputer to support future processor technologies ...

IBM Watson heads to Harvard, MIT to explore future of technology in business ...

Researchers find molecule that prevents type 1 diabetes in mice ...

Institute for Chemical Research at Kyoto University selects SGI to advance computational chemistry and biological research ...

Global industry leaders tackle data explosion with SGI storage solutions ...

Cray Inc. reports third quarter 2011 financial results ...

Sandia wins national awards for cutting water use 30 percent, pursuing other energy savings ...

China adds another supercomputer to its roster ...

Not one, not two, not three, but four clones ...

Not one, not two, not three, but four clones

4 Nov 2011 Henan - Xi-Jun Ren and Yang Xiang from Henan Universities in China, in collaboration with Heng Fan at the Institute of Physics of the Chinese Academy of Sciences, have produced a theory for a quantum cloning machine able to produce several copies of the state of a particle at atomic or sub-atomic scale, or quantum state, in an article about to be published in theEuropean Physical Journal D. This could have implications for quantum information processing methods used, for example, in message encryption systems.

Quantum cloning is difficult because quantum mechanics laws only allow for an approximate copy-not an exact copy-of an original quantum state to be made, as measuring such a state prior to its cloning would alter it. In this study, researchers have demonstrated that it is theoretically possible to create four approximate copies of an initial quantum state, in a process called asymmetric cloning.

The authors have extended previous work that was limited to quantum cloning providing only two or three copies of the original state. One key challenge was that the quality of the approximate copy decreases as the number of copies increases. The authors were able to optimise the quality of the cloned copies, thus yielding four good approximations of the initial quantum state.

They have also demonstrated that their quantum cloning machine has the advantage of being universal and therefore is able to work with any quantum state, ranging from a photon to an atom.

Assymetric quantum cloning has applications in analysing the security of messages encryption systems, based on shared secret quantum keys. Two people will know whether their communication is secure by analysing the quality of each copy of their secret key. Any third party trying to gain knowledge of that key would be detected as measuring it would disturb the state of that key.
Source: Springer Science+Business Media

Back to Table of contents

Primeur weekly 2011-11-07

The Cloud

Oracle named a leader in SOA Governance Magic Quadrant by Gartner analyst firm ...

Cerner selects Oracle Enterprise Manager to support new Cloud services ...

Gartner positions Oracle as a leader in the Magic Quadrant for Enterprise Application Servers ...

EuroFlash

Argonne National Labs selects Allinea DDT for Blue Gene and Linux - Debugging tools evolution to support petascale and exascale ...

Russian supercomputer developer and solution builder RSC joins European HPC association PROSPECT ...

PRACE grants 18 million compute hours for Finnish research groups - new call opens ...

IBM and ABB scientists collaborate to improve energy transmission for more efficient grids ...

Vestas Wind Systems turns to IBM Big Data Analytics for smarter wind energy ...

USFlash

K computer achieves goal of 10 Petaflops ...

University of Wisconsin–Madison home to weather-predicting supercomputer ...

IBM rolls out first solar array designed for high-voltage data centres and industrial use ...

HP shapes the future of extreme low-energy server technology ...

Appro reveals next generation, Xtreme-X supercomputer to support future processor technologies ...

IBM Watson heads to Harvard, MIT to explore future of technology in business ...

Researchers find molecule that prevents type 1 diabetes in mice ...

Institute for Chemical Research at Kyoto University selects SGI to advance computational chemistry and biological research ...

Global industry leaders tackle data explosion with SGI storage solutions ...

Cray Inc. reports third quarter 2011 financial results ...

Sandia wins national awards for cutting water use 30 percent, pursuing other energy savings ...

China adds another supercomputer to its roster ...

Not one, not two, not three, but four clones ...