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Primeur weekly 2016-12-19

Crowd computing

Quake-detection app captured nearly 400 temblors worldwide ...

Quantum computing

Microsoft intensifies quantum cooperation with QuTech ...

Fast track control accelerates switching of quantum bits ...

Two electrons go on a quantum walk and end up in a qudit ...

Researchers discovered elusive half-quantum vortices in a superfluid ...

Focus on Europe

New e-IRGSP5 support project held its kick-off meeting in Barcelona ...

European Commission to organize eInfrastructure Proposers' Day on January 19, 2017 ...

ARM extends HPC offering with acquisition of software tools provider Allinea Software ...

Martin Kersten appointed ACM Fellow ...

PRACE Preparatory Access Type D expected for early 2017 ...

PRACE SHAPE 4th Call awards 4 new innovative European SME projects ...

Middleware

DDN collaborates with Synergy Solutions Management to offer video surveillance and HPC design, test and training at new Innovations Lab ...

GridGain Professional Edition 1.8 adds in-memory SQL Grid to industry-leading in-memory computing platform ...

Technique shrinks data sets for easier analysis ...

Hardware

Intersect360 Research to launch 9th Annual HPC Budget Map survey ...

DDN named a global leader in object storage by IDC ...

Mellanox 25G/100G Ethernet solutions enables Artificial Intelligence Speech Recognition Technology at iFLYTEK ...

Applications

BMW Group to start research with IBM Watson ...

Fincantieri selects IBM Cloud to meet growing international demand for more efficient shipbuilding ...

Better ranking for Big Data using seriation solution ...

Eye-popping view of CO2, critical step for carbon-cycle science ...

Supercomputer simulation reveals 2D glass can go infinitely soft ...

Extraordinary animation reveals ocean's role in El Niños ...

Pitt engineers receive $500,000 award from NASA to advance additive manufacturing ...

Rice and Baylor team sets new mark for 'deep learning' ...

Method enables machine learning from unwieldy data sets ...

Barrow identifies new genes responsible for ALS using IMB Watson Health ...

Global brain initiatives generate tsunami of neuroscience data ...

The Cloud

Q2 SaaS and PaaS Cloud revenues for Oralce up 81%, and up 89% in non-GAAP constant currency ...

Researchers discovered elusive half-quantum vortices in a superfluid


A half-quantum vortex combines circular spin flow and circular mass flow, leading to the formation of vortex pairs that can be observed experimentally. Credit: Ella Maru Studio.
14 Dec 2016 Aalto - Researchers in Aalto University, Finland, and P.L. Kapitza Institute in Moscow have discovered half-quantum vortices in superfluid helium. This vortex is a topological defect, exhibited in superfluids and superconductors, which carries a fixed amount of circulating current.

"This discovery of half-quantum vortices culminates a long search for these objects originally predicted to exist in superfluid helium in 1976", stated Samuli Autti, Doctoral Candidate at Aalto University in Finland. "In the future, our discovery will provide access to the cores of half-quantum vortices, hosting isolated Majorana modes, exotic solitary particles. Understanding these modes is essential for the progress of quantum information processing, building a quantum computer", Samuli Autti continued.

Macroscopic coherence in quantum systems such as superfluids and superconductors provides many possibilities, and some central limitations. For instance, the strength of circulating currents in these systems is limited to certain discrete values by the laws of quantum mechanics. A half-quantum vortex overcomes that limitation using the non-trivial topology of the underlying material, a topic directly related to the 2016 Nobel Prize in physics.

Among the emerging properties is one analogous to the so-called Alice string in high-energy physics, where a particle on a route around the string flips the sign of its charge. In general the quantum character of these systems is already utilized in ultra-sensitive SQUID amplifiers and other important quantum devices.

The article "Observation of Half-Quantum Vortices in Topological Superfluid 3He" has been published in the online version ofPhysical Review Letters- DOI: 10.1103/PhysRevLett.117.255301. Experiments were done in the Low Temperature Laboratory at Aalto University.

The article authors are S. Autti, V.V. Dmitriev, J.T. Mäkinen, A.A. Soldatov, G.E. Volovik, A.N. Yudin V.V. Zavjalov, and V.B. Eltsov.

Source: Aalto University

Back to Table of contents

Primeur weekly 2016-12-19

Crowd computing

Quake-detection app captured nearly 400 temblors worldwide ...

Quantum computing

Microsoft intensifies quantum cooperation with QuTech ...

Fast track control accelerates switching of quantum bits ...

Two electrons go on a quantum walk and end up in a qudit ...

Researchers discovered elusive half-quantum vortices in a superfluid ...

Focus on Europe

New e-IRGSP5 support project held its kick-off meeting in Barcelona ...

European Commission to organize eInfrastructure Proposers' Day on January 19, 2017 ...

ARM extends HPC offering with acquisition of software tools provider Allinea Software ...

Martin Kersten appointed ACM Fellow ...

PRACE Preparatory Access Type D expected for early 2017 ...

PRACE SHAPE 4th Call awards 4 new innovative European SME projects ...

Middleware

DDN collaborates with Synergy Solutions Management to offer video surveillance and HPC design, test and training at new Innovations Lab ...

GridGain Professional Edition 1.8 adds in-memory SQL Grid to industry-leading in-memory computing platform ...

Technique shrinks data sets for easier analysis ...

Hardware

Intersect360 Research to launch 9th Annual HPC Budget Map survey ...

DDN named a global leader in object storage by IDC ...

Mellanox 25G/100G Ethernet solutions enables Artificial Intelligence Speech Recognition Technology at iFLYTEK ...

Applications

BMW Group to start research with IBM Watson ...

Fincantieri selects IBM Cloud to meet growing international demand for more efficient shipbuilding ...

Better ranking for Big Data using seriation solution ...

Eye-popping view of CO2, critical step for carbon-cycle science ...

Supercomputer simulation reveals 2D glass can go infinitely soft ...

Extraordinary animation reveals ocean's role in El Niños ...

Pitt engineers receive $500,000 award from NASA to advance additive manufacturing ...

Rice and Baylor team sets new mark for 'deep learning' ...

Method enables machine learning from unwieldy data sets ...

Barrow identifies new genes responsible for ALS using IMB Watson Health ...

Global brain initiatives generate tsunami of neuroscience data ...

The Cloud

Q2 SaaS and PaaS Cloud revenues for Oralce up 81%, and up 89% in non-GAAP constant currency ...