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Primeur weekly 2015-03-30

Exascale supercomputing

PRACEdays15 to include EESI2 Final Conference, Women in HPC, and Enabling Exascale in Europe ...

The Cloud

HP delivers first fully-configured and integrated OpenStack and Cloud Foundry-based private Cloud ...

Desktop Grids

BOINC 7.4.42 released to the public ...

EuroFlash

Altair Engineering announces keynote speakers from Airbus, Jaguar Land Rover and Bloodhound SSC to present at the 9th UK Altair Technology Conference ...

UK Atomic Weapons Establishment awards SGI contract to support research with new SGI ICE XA systems ...

Cray to deliver five-petaflop supercomputer and high-performance storage system to Petroleum Geo-Services ...

Theory of the Strong Interaction verified - Supercomputer calculates mass difference between neutron and proton ...

Lenovo opens first global High Performance Computing innovation centre in Germany ...

A rehearsal space with musicians 2,700 kilometers apart from each other ...

A first glimpse inside a macroscopic quantum state ...

USFlash

Automotive, aerospace and defense take centre stage at the 2015 Americas Altair Technology Conference ...

Big Data allows computer engineers to find genetic clues in humans ...

SGI delivers cutting-edge supercomputer to the National Institute for Materials Science ...

Supercomputers give universities a competitive edge, researchers find ...

Engineers develop new methods to speed up simulations in computational grand challenge ...

Micron and Intel unveil new 3D NAND flash memory ...

India's National Supercomputing Mission (NSM): Building capacity and capability to be jointly implemented by the Department of Science and Technology and Department of Electronics and Information Technology ...

U.S. Army improves systems testing to deliver more capability to fight ...

Quantum compute this - WSU mathematicians build code to take on toughest of cyber attacks ...

IBM invests in Modernizing Medicine to accelerate adoption of Watson technologies in health care ...

Quantum correlation can imply causation ...

From programmable backbones to advanced 'apps': An end-to-end vision of the future Internet ...

Building shape inspires new material discovery ...

UW scientists build a nanolaser using a single atomic sheet ...

OpenPOWER Foundation technology leaders unveil hardware solutions to deliver new server alternatives ...

Building shape inspires new material discovery


Stuart Hay, ANU
24 Mar 2015 Canberra - Physicists inspired by the radical shape of a Canberra building have created a new type of material which enables scientists to put a perfect bend in light. The creation of a so-called topological insulator could transform the telecommunications industry's drive to build an improved computer chip using light.

Leader of the team, Professor Yuri Kivshar from the Australian National University (ANU) said the revolutionary material might also be useful in microscopes, antenna design, and even quantum computers.

"There has been a hunt for similar materials in photonics based on large complicated structures", stated Professor Kivshar, who is the head of the Nonlinear Physics Centre in ANU Research School of Physics and Engineering. "Instead we used a simple, small-scale zigzag structure to create a prototype of these novel materials with amazing properties."

The structure was inspired by the Nishi building near ANU, which consists of rows of offset zigzag walls.

Topological insulators have been initially developed for electronics, and the possibility of building an optical counterpart is attracting a lot of attention.

The original zigzag structure of the material was suggested in the team's earlier collaboration with Dr. Alexander Poddubny, from Ioffe Institute in Russia, said PhD student Alexey Slobozhanyuk.

"The zigzag structure creates a coupling throughout the material that prevents light from travelling through its centre", Mr. Slobozhanyuk stated. "Instead light is channelled to the edges of the material, where it becomes completely localised by means of a kind of quantum entanglement known as topological order."

Fellow researcher Dr. Andrew Miroshnichenko said the building inspired the researchers to think of multiple zigzags.

"We had been searching for a new topology and one day I looked at the building and a bell went off in my brain", stated fellow researcher Dr. Andrey Miroshnichenko. "On the edges of such a material the light should travel completely unhindered, surfing around irregularities that would normally scatter the light. These materials will allow light to be bent around corners with no loss of signal", he stated.

The team showed that the exceptional attributes of the material are related to its structure, or topology, and not to the molecules it is made from.

"In our experiment we used an array of ceramic spheres, although the initial theoretical model used metallic subwavelength particles", stated Dr. Miroshnichenko. "Even though they are very different materials they gave the same result."

In contrast with other international groups attempting to create topological insulators with large scale structures, the team used spheres that were smaller than the wavelength of the microwaves in their successful experiments.

Dr. Poddubny devised the theory when he realised there was a direct analogy between quantum Kitaev's model of Majorana fermions and optically coupled subwavelength scatterers.

Mr. Slobozhanyuk said the team could control which parts of the material surface the light is channelled to by changing the polarisation of the light.

"This opens possibilities ranging from nanoscale light sources for enhancing microscopes, highly efficient antennas or even quantum computing", he stated. "The structure couples the two sides of the material, so they could be used as entangled qubits for quantum computing."
Source: Australian National University - ANU

Back to Table of contents

Primeur weekly 2015-03-30

Exascale supercomputing

PRACEdays15 to include EESI2 Final Conference, Women in HPC, and Enabling Exascale in Europe ...

The Cloud

HP delivers first fully-configured and integrated OpenStack and Cloud Foundry-based private Cloud ...

Desktop Grids

BOINC 7.4.42 released to the public ...

EuroFlash

Altair Engineering announces keynote speakers from Airbus, Jaguar Land Rover and Bloodhound SSC to present at the 9th UK Altair Technology Conference ...

UK Atomic Weapons Establishment awards SGI contract to support research with new SGI ICE XA systems ...

Cray to deliver five-petaflop supercomputer and high-performance storage system to Petroleum Geo-Services ...

Theory of the Strong Interaction verified - Supercomputer calculates mass difference between neutron and proton ...

Lenovo opens first global High Performance Computing innovation centre in Germany ...

A rehearsal space with musicians 2,700 kilometers apart from each other ...

A first glimpse inside a macroscopic quantum state ...

USFlash

Automotive, aerospace and defense take centre stage at the 2015 Americas Altair Technology Conference ...

Big Data allows computer engineers to find genetic clues in humans ...

SGI delivers cutting-edge supercomputer to the National Institute for Materials Science ...

Supercomputers give universities a competitive edge, researchers find ...

Engineers develop new methods to speed up simulations in computational grand challenge ...

Micron and Intel unveil new 3D NAND flash memory ...

India's National Supercomputing Mission (NSM): Building capacity and capability to be jointly implemented by the Department of Science and Technology and Department of Electronics and Information Technology ...

U.S. Army improves systems testing to deliver more capability to fight ...

Quantum compute this - WSU mathematicians build code to take on toughest of cyber attacks ...

IBM invests in Modernizing Medicine to accelerate adoption of Watson technologies in health care ...

Quantum correlation can imply causation ...

From programmable backbones to advanced 'apps': An end-to-end vision of the future Internet ...

Building shape inspires new material discovery ...

UW scientists build a nanolaser using a single atomic sheet ...

OpenPOWER Foundation technology leaders unveil hardware solutions to deliver new server alternatives ...