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Primeur weekly 2016-06-13

Exascale supercomputing

Paul Messina discusses rewards, challenges for new exascale project ...

Quantum computing

Analogue quantum computation has been universally digitized using superconducting circuits ...

World-first pinpointing of atoms at work for quantum computers ...

Controlling quantum states atom by atom ...

Focus on Europe

Euro 2016: Computer predicts football results ...

HPC community gears up for ISC 2016 - record number of attendees expected ...

Middleware

Bright Computing partners with ProfitBricks to offer customers an elastic high performance computing solution ...

One Stop Systems introduces the GPUltima with Bright Computing's HPC Cluster Manager ...

BeeGFS Omni-Path certification: 12GB/s per server ...

Bright Computing unveils its plans for the International Supercomputing Expo ...

Mellanox paves the way to higher efficiency data centres with 25 Gb/s Ethernet ...

IBM invests to accelerate development and commercialization of disruptive technologies in Asia ...

Hardware

DVV data centre to host new magnitUDE supercomputer ...

CSIR's Centre for High Performance Computing unveils the fastest computer in Africa ...

PNNL appoints Liyuan Liang director of Environmental Molecular Sciences Laboratory ...

Forrester Research names Cray a strong performer in Big Data Hadoop Optimized Systems ...

PRACE to issue Newsletter 17 ...

Dell enables customers to maximize performance of enterprise applications and core business workloads with PowerEdge four-socket servers ...

Michigan State University celebrates arrival of new supercomputer ...

Applications

Materials project releases massive trove of battery and molecule data ...

NERSC fields its first Student Cluster Competition team ...

Simulating chemical evolution with Piz Daint ...

Skyrmions à la carte ...

The Cloud

IBM launches industry's first development environment for Apache Spark - delivered in the Cloud for rapid adoption ...

Leadtek looks to build on healthcare solutions leverage its longtime high-performance visual computing technologies by eyeing medical IoT opportunities ...

Controlling quantum states atom by atom


Credit: Universitaet Basel, Departement Physik
9 Jun 2016 Basel - An international consortium led by researchers at the University of Basel has developed a method to precisely alter the quantum mechanical states of electrons within an array of quantum boxes. The method can be used to investigate the interactions between various types of atoms and electrons, which is essential for future quantum technologies, as the group reports in the journalSmall.

Applications of quantum mechanics are often compromised by the fundamental property of quanta: any measurement inevitably modifies the measured state. Technologies such as quantum computers can be designed only on the basis of known, clearly defined and simple interactions between individual components. The Department of Physics at the University of Basel together with the Swiss Nanoscience Institute has now developed a method that can be used to study these kinds of interactions in a well-defined system.

Breadboards are used in electronic measurement technology to design and test prototypes of electronic circuits and for teaching purposes. The procedure developed by the international consortium led by Prof. Thomas Jung of the University of Basel works in a similar way: for the first time, the new method allows researchers to configure a network of quantum boxes in order to form various quantum electronic states. A quantum box is an artificially produced structure that restricts a particle's movements, so that it can move in only two dimensions. This reduces the complexity of a particle interaction and simplifies the process of measurement and analysis.

The research team refined an established method in which atoms are repositioned one after the other using scanning tunneling microscopy, allowing the creation of clearly defined quantum systems. Through the targeted relocating of xenon atoms in quantum boxes, the team succeeded in generating different patterns that correspond to a wide range of quantum states.

The development of quantum technology relies on a detailed understanding of the interdependence between different electronic states; for example, in various atoms. With the physicists' method, quantum states can be accurately reproduced and interactions between various chemical elements and well-defined electronic states examined - an "unlimited playing field for the study of quantum states", as the researchers write inSmall.

A range of institutions contributed to the project's success: the theory was outlined by researchers from Linköping, Sweden, the molecules used were synthesized in Heidelberg, Germany, and scientists from San Sebastián, Spain were responsible for some of the complex measurements of the specific quantum states.

Sylwia Nowakowska, Aneliia Wäckerlin, Ignacio Piquero-Zulaica, Jan Nowakowski, Shigeki Kawai, Christian Wäckerlin, Manfred Matena, Thomas Nijs, Shadi Fatayer, Olha Popova, Aisha Ahsan, S. Fatameh Mousavi, Toni Ivas, Ernst Meyer, Meike Stöhr, J. Enrique Ortega, Jonas Björk, Lutz H. Gade, Jorge Lobo-Checa, and Thomas A. Jung are the authors of the paper titled "Configuring Electronic States in an Atomically Precise Array of Quantum Boxes", published inSmall2016,00, 1–6 | doi: 10.1002/smll.201600915.
Source: Universitaet Basel

Back to Table of contents

Primeur weekly 2016-06-13

Exascale supercomputing

Paul Messina discusses rewards, challenges for new exascale project ...

Quantum computing

Analogue quantum computation has been universally digitized using superconducting circuits ...

World-first pinpointing of atoms at work for quantum computers ...

Controlling quantum states atom by atom ...

Focus on Europe

Euro 2016: Computer predicts football results ...

HPC community gears up for ISC 2016 - record number of attendees expected ...

Middleware

Bright Computing partners with ProfitBricks to offer customers an elastic high performance computing solution ...

One Stop Systems introduces the GPUltima with Bright Computing's HPC Cluster Manager ...

BeeGFS Omni-Path certification: 12GB/s per server ...

Bright Computing unveils its plans for the International Supercomputing Expo ...

Mellanox paves the way to higher efficiency data centres with 25 Gb/s Ethernet ...

IBM invests to accelerate development and commercialization of disruptive technologies in Asia ...

Hardware

DVV data centre to host new magnitUDE supercomputer ...

CSIR's Centre for High Performance Computing unveils the fastest computer in Africa ...

PNNL appoints Liyuan Liang director of Environmental Molecular Sciences Laboratory ...

Forrester Research names Cray a strong performer in Big Data Hadoop Optimized Systems ...

PRACE to issue Newsletter 17 ...

Dell enables customers to maximize performance of enterprise applications and core business workloads with PowerEdge four-socket servers ...

Michigan State University celebrates arrival of new supercomputer ...

Applications

Materials project releases massive trove of battery and molecule data ...

NERSC fields its first Student Cluster Competition team ...

Simulating chemical evolution with Piz Daint ...

Skyrmions à la carte ...

The Cloud

IBM launches industry's first development environment for Apache Spark - delivered in the Cloud for rapid adoption ...

Leadtek looks to build on healthcare solutions leverage its longtime high-performance visual computing technologies by eyeing medical IoT opportunities ...