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Primeur weekly 2018-02-12

Quantum computing

New controls scale quantum chips ...

Controlling quantum interactions in a single material ...

Light controls two-atom quantum computation ...

Focus on Europe

TANGO project releases the Beta version of #TANGOToolbox to facilitate the effort of coding when targeting various hardware architectures ...

Nominations open for PRACE Ada Lovelace Award for HPC 2018 ...

Optalysys and The Earlham Institute achieve over 90% energy savings in breakthrough project applying optical processing for DNA sequence alignment ...

Middleware

Sylabs emerges from stealth to bring Singularity container technology to enterprise performance computing ...

Dell EMC expands server capabilities for software-defined, edge and high-performance computing ...

Hardware

Virtual reality helps explore the GPS of the mind ...

HiPerGator is the number 3 most powerful computer at a U.S. public university ...

Supermicro expands edge computing and network appliance portfolio with new high density SoC solutions ...

Supermicro introduces Silicon Valley's first 3-Megawatt clean energy automated rack integration facility ...

One Stop Systems introduces highest bandwidth, 5th generation NVMe ion accelerator flash storage array ...

Applications

University of Illinois researcher recognized with ACM Fellowship for contributions to parallel programming ...

After the storm: Simulating and visualizing extreme weather with XSEDE ...

XSEDE's Maverick helps explore next generation solar cells and LEDs ...

Optimized solutions for treating bone fractures will soon be reality ...

UMass Amherst computer science experts in artificial intelligence join IBM's AI Horizons Network ...

AI computer vision breakthrough IDs poachers in less than half a second ...

University of Chicago astrophysicists settle cosmic debate on magnetism of planets and stars ...

Portland State University joins nationwide program to develop brain-inspired computing ...

The Cloud

Ampere launches to accelerate hyperscale Cloud computing innovations ...

Oracle Cloud growth driving aggressive global expansion ...

Leading Cloud providers join with NSF to support data science frontiers ...

Smartly containing the Cloud increases computing efficiency, according to first-of-its-kind study ...

Controlling quantum interactions in a single material

5 Feb 2018 Evanston - The search and manipulation of novel properties emerging from the quantum nature of matter could lead to next-generation electronics and quantum computers. But finding or designing materials that can host such quantum interactions is a difficult task.

"Harmonizing multiple quantum mechanical properties, which often do not coexist together, and trying to do it by design is a highly complex challenge", stated Northwestern University's James Rondinelli.

But James Rondinelli and an international team of theoretical and computational researchers have done just that. Not only have they demonstrated that multiple quantum interactions can coexist in a single material, the team also discovered how an electric field can be used to control these interactions to tune the material's properties.

This breakthrough could enable ultrafast, low-power electronics and quantum computers that operate incredibly faster than current models in the areas of data acquisition, processing, and exchange.

Supported by the US Army Research Office, National Science Foundation of China, German Research Foundation, and China's National Science Fund for Distinguished Young Scholars, the research was published online in the journal Nature Communications . James Rondinelli, the Morris E. Fine Junior Professor in Materials and Manufacturing in Northwestern's McCormick School of Engineering, and Cesare Franchini, professor of quantum materials modeling at the University of Vienna, are the paper's co-corresponding authors. Jiangang He, a postdoctoral fellow at Northwestern, and Cesare Franchini served as the paper's co-first authors.

Quantum mechanical interactions govern the capability of and speed with which electrons can move through a material. This determines whether a material is a conductor or insulator. It also controls whether or not the material exhibits ferro-electricity, or shows an electrical polarization.

"The possibility of accessing multiple order phases, which rely on different quantum-mechanical interactions in the same material, is a challenging fundamental issue and imperative for delivering on the promises that quantum information sciences can offer", Cesare Franchini stated.

Using computational simulations performed at the Vienna Scientific Cluster, the team discovered coexisting quantum-mechanical interactions in the compound silver-bismuth-oxide. Bismuth, a post-transition metal, enables the spin of the electron to interact with its own motion - a feature that has no analogy in classical physics. It also does not exhibit inversion symmetry, suggesting that ferro-electricity should exist when the material is an electrical insulator. By applying an electric field to the material, researchers were able to control whether the electron spins were coupled in pairs - exhibiting Weyl-fermions - or separated - exhibiting Rashba-splitting - as well as whether the system is electrically conductive or not.

"This is the first real case of a topological quantum transition from a ferro-electric insulator to a non-ferro-electric semi-metal", Cesare Franchini stated. "This is like awakening a different kind of quantum interactions that are quietly sleeping in the same house without knowing each other."

Source: Northwestern University

Back to Table of contents

Primeur weekly 2018-02-12

Quantum computing

New controls scale quantum chips ...

Controlling quantum interactions in a single material ...

Light controls two-atom quantum computation ...

Focus on Europe

TANGO project releases the Beta version of #TANGOToolbox to facilitate the effort of coding when targeting various hardware architectures ...

Nominations open for PRACE Ada Lovelace Award for HPC 2018 ...

Optalysys and The Earlham Institute achieve over 90% energy savings in breakthrough project applying optical processing for DNA sequence alignment ...

Middleware

Sylabs emerges from stealth to bring Singularity container technology to enterprise performance computing ...

Dell EMC expands server capabilities for software-defined, edge and high-performance computing ...

Hardware

Virtual reality helps explore the GPS of the mind ...

HiPerGator is the number 3 most powerful computer at a U.S. public university ...

Supermicro expands edge computing and network appliance portfolio with new high density SoC solutions ...

Supermicro introduces Silicon Valley's first 3-Megawatt clean energy automated rack integration facility ...

One Stop Systems introduces highest bandwidth, 5th generation NVMe ion accelerator flash storage array ...

Applications

University of Illinois researcher recognized with ACM Fellowship for contributions to parallel programming ...

After the storm: Simulating and visualizing extreme weather with XSEDE ...

XSEDE's Maverick helps explore next generation solar cells and LEDs ...

Optimized solutions for treating bone fractures will soon be reality ...

UMass Amherst computer science experts in artificial intelligence join IBM's AI Horizons Network ...

AI computer vision breakthrough IDs poachers in less than half a second ...

University of Chicago astrophysicists settle cosmic debate on magnetism of planets and stars ...

Portland State University joins nationwide program to develop brain-inspired computing ...

The Cloud

Ampere launches to accelerate hyperscale Cloud computing innovations ...

Oracle Cloud growth driving aggressive global expansion ...

Leading Cloud providers join with NSF to support data science frontiers ...

Smartly containing the Cloud increases computing efficiency, according to first-of-its-kind study ...