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Primeur weekly 2018-01-08

Crowd computing

GIMPS Project discovers largest known prime number ...

Focus on Europe

OpenAIRE datathon encouraging developers and data scientists to analyse the OpenAIRE Information Space ...

HPC User Forum to be hosted at Teratec in March 2018 ...

Overview of European HPC research ...

ERC grantee behind discovery of major hardware bugs ...

University of Paderborn full member of the Gauss Alliance e.V. ...

Bulgarian Presidency of the Council of the EU to host Flagship Conference "Research Infrastructures beyond 2020 - sustainable and effective ecosystem for science and society" ...

ICRI 2018 to be hosted in Vienna, Austria in September 2018 ...

Hardware

Samsung now mass producing industry's first 2nd-generation, 10-nanometer class DRAM ...

India's first multi-petaflops supercomputer to be inaugurated at the Indian Institute of Tropical Meteorology ...

Cray appoints Catriona Fallon to Board of Directors ...

Unhackable computer under development with $3.6 million DARPA grant ...

Mellanox ships BlueField system-on-chip platforms and SmartNIC adapters to leading OEMs and hyperscale customers ...

Applications

Carnegie Mellon reveals inner workings of victorious AI ...

Registration of ASC18 Student Supercomputer Challenge now open ...

SUTD researchers discover a Valleytronics route towards reversible computer ...

Computer science pioneer Bjarne Stroustrup to receive the 2018 Charles Draper Prize for Engineeering ...

Conference on Neural Information Processing Systems hosted the conversational intelligence challenge finals ...

A simplified formulation of lattice gauge theories for applications in particle physics as well as quantum simulations ...

ASC18 competition timeline released, setting the stage for AI computing challenge ...

Tailoring cancer treatments to individual patients ...

The Cloud

Intersect360 Research report shows Huawei emerging as a global leader in HPC market with Cloud and AI convergence solutions ...

Microsoft to acquire Avere Systems, accelerating high-performance computing innovation for media and entertainment industry and beyond ...

Cyfronet to host 4th edition of Workshop on Cloud Services for Synchronisation and Sharing ...

Gridsum and Peking University Law School establish legal AI Lab and Research Institute ...

SUTD researchers discover a Valleytronics route towards reversible computer

(a) This is a schematic drawing of the valleytronic logic gate (b) Operation of the valleytronic logic gate (c-e) Electrical characteristics of the valleytronic logic gate (f) Traditional reversible logical operation (g) Valleytronic-based reversible logical operation. Credit: Singapore University of Technology and Design (SUTD).21 Dec 2017 Singapore - In many two-dimensional (2D) materials, electrons not only possess charge and spin, but further exhibits an unusual quantum feature known as "valley". Simply speaking, electrons residing in many 2D materials can live in well-separated energy minima, and the "address" describing which minima these electrons belong to is known as "valley". The use of this "valley address" to encode and process information forms the core of a new vibrant research field known as "valleytronics".

Despite much anticipation of valleytronics being a candidate for 'beyond CMOS' technology and to continue the legacy of Moore's law, its progress is severely hindered by the lack of practical designs for a valleytronic-based information processing unit. One major challenge in valleytronic is the construction of a "valley filter". Valley filter can produce electrical current composed dominantly of electrons from only one specific "valley". It serves as a fundamental building block in valleytronics.

By harnessing the unusual electrical properties of 2D materials such as few-layer black phosphorus and topological Weyl/Dirac semimetal thin films, researchers from the Singapore University of Technology and Design (SUTD) designed a versatile all-electric-controlled valley filter and demonstrated, for the first time, a concrete working design of valleytronic logic gate capable of performing the full set of two-input Boolean logics.

"A particularly remarkable finding is a previously unexplored approach of achieving logically-reversible computation by storing information in the electron's valley state", stated first author Dr. Yee Sin Ang from SUTD.

Conventional digital computers process information in a logically-irreversible fashion. This leads to a serious logical issue - upon receiving a computational output, an end-user cannot unambiguously identify the original input information that produces this output.

Making digital computing logically-reversible is not only interesting in terms of fundamental information science, but also has broad applications in areas such as cryptography, signal and image processing, quantum computing, and is ultimately required to improve the energy efficiency of digital computers beyond the thermodynamic bottleneck also known as Landauer's limit. Due to its immense potentials, enormous research efforts have been devoted to the search for a practical reversible computer since the 1970s.

The traditional way of making a logically-reversible computer relies heavily on complex circuitries that inevitably generate large quantities of wasteful bits. These complex and wasteful methods have prevented reversible computing from gaining widespread industrial and commercial interests.

The key novelty of the valleytronic-based reversible logic gate proposed by SUTD researchers is that the device stores additional bits of input information in the valley state of the computational output to achieve logical-reversibility. This valleytronic approach bypasses the need of complex circuitries and significantly reduces the generation of wasteful bits. Such simple architecture is also more compatible with the ever-growing industrial and commercial demands for compact smart devices with ever-shrinking physical sizes.

Co-author and principal investigator of this research, SUTD Prof Ricky Ang, stated: "The union of valleytronics, digital information processing and reversible computing may provide a new paradigm towards the future of ultimately energy-efficient computer with novel functionalities."

Source: Singapore University of Technology and Design - SUTD

Back to Table of contents

Primeur weekly 2018-01-08

Crowd computing

GIMPS Project discovers largest known prime number ...

Focus on Europe

OpenAIRE datathon encouraging developers and data scientists to analyse the OpenAIRE Information Space ...

HPC User Forum to be hosted at Teratec in March 2018 ...

Overview of European HPC research ...

ERC grantee behind discovery of major hardware bugs ...

University of Paderborn full member of the Gauss Alliance e.V. ...

Bulgarian Presidency of the Council of the EU to host Flagship Conference "Research Infrastructures beyond 2020 - sustainable and effective ecosystem for science and society" ...

ICRI 2018 to be hosted in Vienna, Austria in September 2018 ...

Hardware

Samsung now mass producing industry's first 2nd-generation, 10-nanometer class DRAM ...

India's first multi-petaflops supercomputer to be inaugurated at the Indian Institute of Tropical Meteorology ...

Cray appoints Catriona Fallon to Board of Directors ...

Unhackable computer under development with $3.6 million DARPA grant ...

Mellanox ships BlueField system-on-chip platforms and SmartNIC adapters to leading OEMs and hyperscale customers ...

Applications

Carnegie Mellon reveals inner workings of victorious AI ...

Registration of ASC18 Student Supercomputer Challenge now open ...

SUTD researchers discover a Valleytronics route towards reversible computer ...

Computer science pioneer Bjarne Stroustrup to receive the 2018 Charles Draper Prize for Engineeering ...

Conference on Neural Information Processing Systems hosted the conversational intelligence challenge finals ...

A simplified formulation of lattice gauge theories for applications in particle physics as well as quantum simulations ...

ASC18 competition timeline released, setting the stage for AI computing challenge ...

Tailoring cancer treatments to individual patients ...

The Cloud

Intersect360 Research report shows Huawei emerging as a global leader in HPC market with Cloud and AI convergence solutions ...

Microsoft to acquire Avere Systems, accelerating high-performance computing innovation for media and entertainment industry and beyond ...

Cyfronet to host 4th edition of Workshop on Cloud Services for Synchronisation and Sharing ...

Gridsum and Peking University Law School establish legal AI Lab and Research Institute ...