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Primeur weekly 2017-07-24

Focus

20th Birthday celebrating OpenMP still welcoming new members ...

Fujitsu's processor roadmap is hitting new targets for Deep Learning ...

Focus on Europe

New FPGA programming method delivers five times more computing power ...

Gazprom Neft to utilise capacity at the St Petersburg Polytechnic University supercomputer ...

Tenfold connectivity increase between Ukraine and European research and education network ...

Newly improved Brain Simulation Platform now online ...

Joeri van Leeuwen received a grant and in-kind expertise from the eScience Center for his astronomy project AA-ALERT ...

Middleware

Bright Computing and Brazil-based AMT sign partnership agreement ...

Hardware

7th International Women in HPC workshop ...

IBM scientists observe elusive gravitational effect in solid-state physics ...

New Supermicro Rack Scale Design (RSD) supports high-density, high-performance pooled NVMe storage ...

Inspur announced the new M5 series servers to get businesses ready for the new era of intelligent computing ...

Women, leadership and Flash - Panel and networking event ...

Applications

3D models help scientists gauge flood impact ...

Pulses of electrons manipulate nanomagnets and store information ...

Flashes of light on the dark matter ...

Titan simulations show importance of close 2-way coupling between human and Earth systems ...

A firefly's flash inspires new nanolaser light ...

Simulation reveals universal signature of chaos in ultracold reactions ...

Massive simulation shows HIV capsid interacting with its environment ...

ANSYS, Saudi Aramco and KAUST shatter supercomputing record ...

Scientists use "Piz Daint" simulations to track heavy summer precipitation from the Mediterranean ...

Fernanda Foertter elected SIG HPC Education Vice Chair ...

The Cloud

IBM expands global Cloud data centre presence with four new facilities ...

The Cloud comes to you: AT&T to power self-driving cars, AR/VR and other future 5G applications through edge computing ...

Teradata acquires San Diego-based start-up StackIQ to strengthen Teradata Everywhere and IntelliCloud capabilities ...

IBM mainframe ushers in new era of data protection ...

Solarflare lets server racks match connectivity of a human neuron ...

New high speed interface connects IBM Z to IBM storage systems ...

Oracle significantly expands Cloud at Customer with PaaS and SaaS services to help customers in their journey to the Cloud ...

A firefly's flash inspires new nanolaser light


The complex flashing patterns of fireflies (left) led KAUST researchers to develop anapole lasers that use interactions between energy-storing nanodisks (centre) to generate high-speed pulses of light on microchips (right). Credit: Reproduced with permission from ref 1. Credit; 2017 Gongora et al.
16 Jul 2017 Thuwal - A reinvented, low-cost laser source that stores light energy inside nanoscale disks could underpin the development of optically powered neurocomputers, reveals a simulation study led by KAUST researchers.

Photonic devices that use controlled laser pulses to manipulate data switches, biomedical implants and solar cells are sought-after because they are lightning quick compared to traditional electronics; however, current prototypes have not been commercialized because of the difficulty in making lasers small enough to fit onto computer circuit boards, while also retaining pulse-shaping capabilities.

"The challenge of reducing an optical source down to the nanoscale is that it starts to emit energy strongly in all directions", explained Andrea Fratalocchi, an Associate Professor of Electrical Engineering. "This makes it almost impossible to control."

A partnership with Yuri Kivshar's group at the Australian National University revealed paths to beat optical diffraction limits with unconventional anapole lasers. Being made from semiconductors shaped into precisely sized nanodisks, anapoles respond to light stimulation by producing electromagnetic waves that either radiate or rotate in donut-shaped toroid distributions.

At specific excitation frequencies, interference between the two fields produces a state - the anapole - which does not emit energy in any direction and traps light inside the nanodisk.

"You can think of this laser as an energy tank - once the laser is on, it stores light and doesn't let it go until you want to collect it", stated Andrea Fratalocchi.

To unlock the potential of this new light source, the KAUST team simulated various engineering architectures using quantum-based algorithms.

These calculations, along with improved microchip integration and thousand-fold enhancements in coupling to optical routers, predict that anapole nanolasers can generate ultrafast light pulses that are uniquely suited for studying natural patterns of signaling and neural connections.

Andrea Fratalocchi noted that the nanolasers would appear invisible to an observer until perturbed by a nearby object. Consequently, arranging the cylindrical light sources into a loop could be used to produce a chain reaction of light emissions, tunable down to as small as femtosecond pulse times.

"It's really like a population of fireflies, where the individuals synchronize their emissions into beautiful patterns", he explained "When we place the nanolasers close together, we can get similar control over the pulses."

The team's models suggest that integrating different loops of anapole nanolasers may produce oscillating, dynamic patterns useful for reproducing brain-like activities, such as machine learning and memory retrieval at low cost because the platform needs only inexpensive silicon wafers to work.

The paper titled " Anapole nanolasers for mode-locking and ultrafast pulse generation " has appeared inNature Communications.
Source: King Abdullah University of Science & Technology - KAUST

Back to Table of contents

Primeur weekly 2017-07-24

Focus

20th Birthday celebrating OpenMP still welcoming new members ...

Fujitsu's processor roadmap is hitting new targets for Deep Learning ...

Focus on Europe

New FPGA programming method delivers five times more computing power ...

Gazprom Neft to utilise capacity at the St Petersburg Polytechnic University supercomputer ...

Tenfold connectivity increase between Ukraine and European research and education network ...

Newly improved Brain Simulation Platform now online ...

Joeri van Leeuwen received a grant and in-kind expertise from the eScience Center for his astronomy project AA-ALERT ...

Middleware

Bright Computing and Brazil-based AMT sign partnership agreement ...

Hardware

7th International Women in HPC workshop ...

IBM scientists observe elusive gravitational effect in solid-state physics ...

New Supermicro Rack Scale Design (RSD) supports high-density, high-performance pooled NVMe storage ...

Inspur announced the new M5 series servers to get businesses ready for the new era of intelligent computing ...

Women, leadership and Flash - Panel and networking event ...

Applications

3D models help scientists gauge flood impact ...

Pulses of electrons manipulate nanomagnets and store information ...

Flashes of light on the dark matter ...

Titan simulations show importance of close 2-way coupling between human and Earth systems ...

A firefly's flash inspires new nanolaser light ...

Simulation reveals universal signature of chaos in ultracold reactions ...

Massive simulation shows HIV capsid interacting with its environment ...

ANSYS, Saudi Aramco and KAUST shatter supercomputing record ...

Scientists use "Piz Daint" simulations to track heavy summer precipitation from the Mediterranean ...

Fernanda Foertter elected SIG HPC Education Vice Chair ...

The Cloud

IBM expands global Cloud data centre presence with four new facilities ...

The Cloud comes to you: AT&T to power self-driving cars, AR/VR and other future 5G applications through edge computing ...

Teradata acquires San Diego-based start-up StackIQ to strengthen Teradata Everywhere and IntelliCloud capabilities ...

IBM mainframe ushers in new era of data protection ...

Solarflare lets server racks match connectivity of a human neuron ...

New high speed interface connects IBM Z to IBM storage systems ...

Oracle significantly expands Cloud at Customer with PaaS and SaaS services to help customers in their journey to the Cloud ...