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Primeur weekly 2019-06-11

Exascale supercomputing

Cray wins Gold and Silver Honours in 2019 American Business Awards ...

Quantum computing

New research unlocks properties for quantum information storage and computing ...

Focus on Europe

One of the most competitive supercomputers in the world to be placed in Kajaani, Finland ...

EuroHPC JU approved 840 million euro funding for eight supercomputers ...

First steps towards a made-in-Europe high-performance microprocessor ...

From 9,4 to 22 Petaflop/s in 2020: Inauguration of Joliot-Curie, the French supercomputer dedicated to French and European research ...

Atos to deliver most powerful supercomputer in Norway to national e-infrastructure provider Uninett Sigma2 ...

MareNostrum 5 will host an experimental platform to create European supercomputing technologies ...

EuroHPC selects Barcelona Supercomputing Center as entity to host one of the largest European supercomputers ...

Gauss Centre for Supercomputing resources support generation of first images of a black hole ...

Hardware

Supermicro authorized WekaIO OEM partner ...

WekaIO and Penguin Computing deliver record-breaking performance on STAC-M3 "Tick Analytics" Benchmark ...

Boston announces first European NVIDIA RAPIDS test drive programme ...

Check Point Software Technologies propels Mellanox past one million Ethernet switch ports ...

NEC provides CLAIX-2018 supercomputer to RWTH Aachen University in Germany ...

NEC enters into a technology partnership with ANEO for utilizing the NEC SX-Aurora Tsubasa-Vector Engine ...

Applications

Cray Shasta sparks new AI research programme at Indiana University ...

Michael Zentner joins SDSC to lead Sustainable Scientific Software Group ...

Researchers rely on Comet to showcase colour-changing materials ...

Supercomputing dynamic earthquake rupture models ...

German Aerospace and HPC join forces for global change research ...

ANSYS and BMW Group partner to jointly create the industry's first simulation tool chain for autonomous driving ...

ANSYS 2019 R2 strengthens digital thread between design, engineering and manufacturing ...

The Cloud

Microsoft and Oracle to interconnect Microsoft Azure and Oracle Cloud ...

Univa collaborates with Intel Corporation to offer an Intel Select Solution for HPC and AI Converged Clusters ...

New research unlocks properties for quantum information storage and computing

6 Jun 2019 Troy - Researchers at Rensselaer Polytechnic Institute have come up with a way to manipulate tungsten diselenide (WSe2) - a promising two-dimensional material - to further unlock its potential to enable faster, more efficient computing, and even quantum information processing and storage. Their findings were published inNature Communications.

Across the globe, researchers have been heavily focused on a class of two-dimensional, atomically thin semiconductor materials known as monolayer transition metal dichalcogenides. These atomically thin semiconductor materials - less than 1 nm thick - are attractive as the industry tries to make devices smaller and more power efficient.

"It's a completely new paradigm", stated Sufei Shi, assistant professor of chemical and biological engineering at Rensselaer and corresponding author on the paper. "The advantages could be huge."

Sufei Shi and his research team, in partnership with staff from the Micro and Nano Fabrication Clean Room within the Center for Materials, Devices, and Integrated Systems at Rensselaer, have developed a method to isolate these thin layers of WSe2from crystals so they can stack them on top of other atomically thin materials such as boron nitride and graphene.

When the WSe2layer is sandwiched between two boron nitride flakes and interacts with light, Sufei Shi said, a unique process occurs. Unlike in a traditional semiconductor, electrons and holes strongly bond together and form a charge-neutral quasiparticle called an exciton.

"Exciton is probably one of the most important concepts in light-matter interaction. Understanding that is critical for solar energy harvesting, efficient light-emitting diode devices, and almost anything related to the optical properties of semiconductors", stated Sufei Shi, who is also a member of the department of electrical, computer, and systems engineering at Rensselaer. "Now we have found that it actually can be used for quantum information storage and processing."

One of the exciting properties of the exciton in WSe2, he said, is a new quantum degree of freedom that's become known as "valley spin" - an expanded freedom of movement for particles that has been eyed for quantum computing. But, Sufei Shi explained, excitons typically don't have a long lifetime, which makes them unpractical.

In a previous publication in Nature Communications , Sufei Shi and his team discovered a special "dark" exciton that typically can't be seen but has a longer lifetime. Its challenge is that the "dark" exciton lacks the "valley-spin" quantum degree of freedom.

In this most recent research Sufei Shi and his team figured out how to brighten the "dark" exciton; that is, to make the "dark" exciton interact with another quasi-particle known as a phonon to create a completely new quasi-particle that has both properties researchers want.

"We found the sweet spot", Sufei Shi stated. "We found a new quasiparticle that has a quantum degree of freedom and also a long lifetime, that's why it's so exciting. We have the quantum property of the 'bright' exciton, but also have the long lifetime of the 'dark' exciton."

The team's findings, Sufei Shi said, lay the foundation for future development toward the next generation of computing and storage devices.

At Rensselaer, Sufei Shi was joined on this publication by postdoctoral scholar Zhipeng Li and graduate students Tianmeng Wang and Zhen Lian, all from the department of chemical and biological engineering. This research was also done in close partnership with the National High Magnetic Field Lab and other research institutions.

This research was primarily funded by the Air Force Office of Scientific Research.
Source: Rensselaer Polytechnic Institute

Back to Table of contents

Primeur weekly 2019-06-11

Exascale supercomputing

Cray wins Gold and Silver Honours in 2019 American Business Awards ...

Quantum computing

New research unlocks properties for quantum information storage and computing ...

Focus on Europe

One of the most competitive supercomputers in the world to be placed in Kajaani, Finland ...

EuroHPC JU approved 840 million euro funding for eight supercomputers ...

First steps towards a made-in-Europe high-performance microprocessor ...

From 9,4 to 22 Petaflop/s in 2020: Inauguration of Joliot-Curie, the French supercomputer dedicated to French and European research ...

Atos to deliver most powerful supercomputer in Norway to national e-infrastructure provider Uninett Sigma2 ...

MareNostrum 5 will host an experimental platform to create European supercomputing technologies ...

EuroHPC selects Barcelona Supercomputing Center as entity to host one of the largest European supercomputers ...

Gauss Centre for Supercomputing resources support generation of first images of a black hole ...

Hardware

Supermicro authorized WekaIO OEM partner ...

WekaIO and Penguin Computing deliver record-breaking performance on STAC-M3 "Tick Analytics" Benchmark ...

Boston announces first European NVIDIA RAPIDS test drive programme ...

Check Point Software Technologies propels Mellanox past one million Ethernet switch ports ...

NEC provides CLAIX-2018 supercomputer to RWTH Aachen University in Germany ...

NEC enters into a technology partnership with ANEO for utilizing the NEC SX-Aurora Tsubasa-Vector Engine ...

Applications

Cray Shasta sparks new AI research programme at Indiana University ...

Michael Zentner joins SDSC to lead Sustainable Scientific Software Group ...

Researchers rely on Comet to showcase colour-changing materials ...

Supercomputing dynamic earthquake rupture models ...

German Aerospace and HPC join forces for global change research ...

ANSYS and BMW Group partner to jointly create the industry's first simulation tool chain for autonomous driving ...

ANSYS 2019 R2 strengthens digital thread between design, engineering and manufacturing ...

The Cloud

Microsoft and Oracle to interconnect Microsoft Azure and Oracle Cloud ...

Univa collaborates with Intel Corporation to offer an Intel Select Solution for HPC and AI Converged Clusters ...