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Primeur weekly 2016-11-14

Exascale supercomputing

Berkeley Lab to lead AMR co-design centre for DOE's Exascale Computing Project ...

Exascale Computing Project announces $48 million to establish Exascale co-design centres ...

US Exascale Computing Project awards $34 million for software development ...

Quantum computing

Breakthrough in the quantum transfer of information between matter and light ...

Focus on Europe

European Commission reveals its forthcoming call for energy efficient, high performance processors ...

World-leading HPC centres partner to form accelerated computing institute ...

Atos Bull to boost Dutch research at SURFsara with first Bull sequana supercomputer installed ...

Middleware

Allinea tools yield a 50% speed up for genome applications at the Earlham Institute ...

NERSC's 'Shifter' scales up to more than 9,000 Cori KNL processors ...

DDN's Big Data storage provides Aalto University ample capacity and fast access to vital research data ...

DDN unveils industry's fastest multi-level security Lustre solution ...

DDN delivers new burst buffer appliance and updates block and file appliances, completing total product line refresh ...

Atos Bull tackles storage bottlenecks for High Performance Computing ...

Cycle Computing debuts the newest version of its groundbreaking CycleCloud ...

Hardware

University of Toronto selects CoolIT Systems to liquid cool signal processor for CHIME project ...

CoolIT Systems optimizes Trade and Match solution with custom closed-loop liquid cooling ...

SDSC to host high-speed, large data transfer experiment at SC16 Show ...

Cray XC40 "Theta" supercomputer accepted at Argonne National Laboratory ...

Cray launches next-generation supercomputer: the Cray XC50 ...

Cray reports third quarter 2016 financial results ...

Mellanox drives Virtual Reality to new levels with breakthrough performance ...

Mellanox announces 200Gb/s HDR InfiniBand solutions enabling record levels of performance and scalability ...

Computers made of genetic material? ...

CoolIT Systems to showcase best-in-class HPC liquid cooling offering at SC16 ...

Applications

BoschDoc, AHCODA-DB and OpenML winners of the Data Prize 2016 ...

Blue Waters simulates largest membrane channel made of DNA origami ...

Cray joins iEnergy, the oil and gas industry's foremost community for exploration and production ...

Large-scale computer simulations reveal biological growth processes ...

NASA science and technology advancements demonstrated at Supercomputing Conference ...

Unlocking big genetic datasets ...

Accelerating cancer research with deep learning ...

System opens up high-performance programming to non-experts ...

Studying structure to understand function within 'material families' ...

Chury is much younger than previously thought ...

TOP500

Global supercomputing capacity creeps up as Petascale systems blanket Top 100 ...

InfiniBand chosen by nearly 4x more end-users versus proprietary offerings in 2016 as shown on the TOP500 supercomputers list ...

The Cloud

SURFnet selects eight Cloud providers for Dutch education and research ...

Breakthrough in the quantum transfer of information between matter and light

10 Nov 2016 Montréal - A paper titled "High-Fidelity and Ultrafast Initialization of a Hole-Spin Bound to a Te Isoelectronic Centre in ZnSe" was recently published by a team from Polytechnique Montréal and France's CNRS in the prestigious journalPhysical Review Letters. The creation of a qubit in zinc selenide, a well-known semi-conductor material, made it possible to produce an interface between quantum physics that governs the behaviour of matter on a nanometre scale and the transfer of information at the speed of light, thereby paving the way to producing quantum communications networks.

In today's computers, classical physics rules. Billions of electrons work together to make up an information bit: 0, electrons are absent and 1, electrons are present. In quantum physics, single electrons are instead preferred since they express an amazing attribute: the electron can take the value of 0, 1 or any superposition of these two states. This is the qubit, the quantum equivalent of the classical bit. Qubits provide stunning possibilities for researchers.

An electron revolves around itself, somewhat like a spinning top. That's the spin. By applying a magnetic field, this spin points up, down, or simultaneously points both up and down to form a qubit. Better still, instead of using an electron, we can use the absence of an electron; this is what physicists call a "hole". Like its electron cousin, the hole has a spin from which a qubit can be formed. Qubits are intrinsically fragile quantum creature, they therefore need a special environment.

Zinc selenide, or ZnSe, is a crystal in which atoms are precisely organized. It is also a semi-conductor into which it is easy to intentionally introduce tellurium impurities, a close relative of selenium in the periodic table, on which holes are trapped, rather like air bubbles in a glass.

This environment protects the hole's spin - our qubit - and helps maintaining its quantum information accurately for longer periods; it's the coherence time, the time that physicists the world over are trying to extend by all possible means. The choice of zinc selenide is purposeful, since it may provide the quietest environment of all semiconductor materials.

Philippe St-Jean, a doctoral student on Professor Sébastien Francoeur's team, uses photons generated by a laser to initialize the hole and record quantum information on it. To read it, he excites the hole again with a laser and then collects the emitted photons. The result is a quantum transfer of information between the stationary qubit, encoded in the spin of the hole held captive in the crystal, and the flying qubit - the photon, which of course travels at the speed of light.

This new technique shows that it is possible to create a qubit faster than with all the methods that have been used until now. Indeed, a mere hundred or so picoseconds, or less than a billionth of a second, are sufficient to go from a flying qubit to a static qubit, and vice-versa.

Although this accomplishment bodes well, there remains a lot of work to do before a quantum network can be used to conduct unconditionally secure banking transactions or build a quantum computer able to perform the most complex calculations. That is the daunting task which Sébastien Francoeur's research team will continue to tackle.

The Natural Sciences and Engineering Research Council of Canada (NSERC) funded the research of Mr. Francoeur and his team.

St-Jean P., Ethier-Majcher G., Andre R., and Francoeur S. are the authors of the paper titled " High-fidelity and ultrafast initialization of a hole spin bound to a Te isoelectronic center in ZnSe ". The paper was published inPhysical Review Letters, 117(16) - doi:10.1103/PhysRevLett.117.167401.

Source: Polytechnique Montréal

Back to Table of contents

Primeur weekly 2016-11-14

Exascale supercomputing

Berkeley Lab to lead AMR co-design centre for DOE's Exascale Computing Project ...

Exascale Computing Project announces $48 million to establish Exascale co-design centres ...

US Exascale Computing Project awards $34 million for software development ...

Quantum computing

Breakthrough in the quantum transfer of information between matter and light ...

Focus on Europe

European Commission reveals its forthcoming call for energy efficient, high performance processors ...

World-leading HPC centres partner to form accelerated computing institute ...

Atos Bull to boost Dutch research at SURFsara with first Bull sequana supercomputer installed ...

Middleware

Allinea tools yield a 50% speed up for genome applications at the Earlham Institute ...

NERSC's 'Shifter' scales up to more than 9,000 Cori KNL processors ...

DDN's Big Data storage provides Aalto University ample capacity and fast access to vital research data ...

DDN unveils industry's fastest multi-level security Lustre solution ...

DDN delivers new burst buffer appliance and updates block and file appliances, completing total product line refresh ...

Atos Bull tackles storage bottlenecks for High Performance Computing ...

Cycle Computing debuts the newest version of its groundbreaking CycleCloud ...

Hardware

University of Toronto selects CoolIT Systems to liquid cool signal processor for CHIME project ...

CoolIT Systems optimizes Trade and Match solution with custom closed-loop liquid cooling ...

SDSC to host high-speed, large data transfer experiment at SC16 Show ...

Cray XC40 "Theta" supercomputer accepted at Argonne National Laboratory ...

Cray launches next-generation supercomputer: the Cray XC50 ...

Cray reports third quarter 2016 financial results ...

Mellanox drives Virtual Reality to new levels with breakthrough performance ...

Mellanox announces 200Gb/s HDR InfiniBand solutions enabling record levels of performance and scalability ...

Computers made of genetic material? ...

CoolIT Systems to showcase best-in-class HPC liquid cooling offering at SC16 ...

Applications

BoschDoc, AHCODA-DB and OpenML winners of the Data Prize 2016 ...

Blue Waters simulates largest membrane channel made of DNA origami ...

Cray joins iEnergy, the oil and gas industry's foremost community for exploration and production ...

Large-scale computer simulations reveal biological growth processes ...

NASA science and technology advancements demonstrated at Supercomputing Conference ...

Unlocking big genetic datasets ...

Accelerating cancer research with deep learning ...

System opens up high-performance programming to non-experts ...

Studying structure to understand function within 'material families' ...

Chury is much younger than previously thought ...

TOP500

Global supercomputing capacity creeps up as Petascale systems blanket Top 100 ...

InfiniBand chosen by nearly 4x more end-users versus proprietary offerings in 2016 as shown on the TOP500 supercomputers list ...

The Cloud

SURFnet selects eight Cloud providers for Dutch education and research ...