Back to Table of contents

Primeur weekly 2014-08-18

Special

HPC computing based on the working of the human brain ...

Exascale supercomputing

NERSC, Intel, and Cray team up to prepare users for transition to exascale computing ...

The Cloud

Made in IBM Labs: Governing geographically dispersed Cloud data ...

IBM acquires Cloud security services provider Lighthouse Security Group ...

IBM opens first SoftLayer data centre in Canada ...

EuroFlash

European Commission to launch public survey on Net Innovation for the Work Programme 2016-2017 ...

SysFera joins ETP4HPC ...

Iberdrola stars work on construction of 66 megawatt Pier II wind farm in Mexico ...

Quantum simulators explained ...

USFlash

University of Michigan computer scientist reviews frontier technologies to determine fundamental limits of computer scaling ...

Finalists compete for coveted ACM Gordon Bell Prize in High Performance Computing ...

Florida Polytechnic University, Flagship Solutions Group and IBM announce supercomputing centre ...

Vancouver Film School selects HP Z workstations with AMD FirePro professional graphics ...

TACC's Stampede and Lonestar systems aid microbiome research of gum disease, diabetes, and Crohn's disease ...

CacheBox application acceleration software increases on-line transactions per second by 56x while reducing latency by 98% ...

Data-visualization tool identifies sources of aberrant results and recomputes visualizations without them ...

Penguin Computing's new line of Arctica Ethernet switches featuring x86 application compatibility now available ...

Altera releases Quartus II software Arria 10 edition v14.0 ...

IBM to receive approval for selling x86 supercomputer business to Lenovo ...

Quantum simulators explained

11 Aug 2014 Oxford - Everything you ever wanted to know about quantum simulators has been summed up in a new review fromEPJ Quantum Technology. As part of a new Thematic Series on Quantum Simulations, the open access journalEPJ Quantum Technologyhas just published an overview of just what a quantum simulator is, namely a device that actively uses quantum effects to answer questions on model systems. This review, published by Tomi Johnson and colleagues from the Centre for Quantum Technologies in Singapore and the University of Oxford, UK, outlines various approaches used in quantum simulators.

Specifically, the authors focus on the difference between the purpose of operations referred to as 'simulation' and 'computation'. They argue this distinction is related to the purpose of an operation, to our level of confidence in and to our expectations with regard to its accuracy.

They then explain the role of simulations in science, in particular, how simulation reveals information about a mathematical function or model in relation to a system. This approach is reminiscent of physicist Richard Feynman's definition of simulation, which is akin to using a physical device to learn about a real physical system.

Such simulation of the function of a system only takes its full significance when compared with the outcome of the same function on a real-life system of interest. The outcome helps decide whether or not the model accurately represents the real system. If the representation is thought to be accurate, the quantum simulator can then loosely be considered to be a simulator for the system of interest.

Finally the authors also explain the threshold between quantum and classical simulations. In this context, Tomi Johnson and colleagues suggest that there are many more questions pertaining to the work of simulators that need to be answered. These include: Can we predict in advance where the results of quantum simulators are more sensitive to errors? How does this overlap with the regimes of classical simulability?

Johnson, T. H., Clark, S. R. and Jaksch, D. are the authors of "What is a quantum simulator?" which appears in theEuropean Physical Journal Quantum Technologywith reference DOI 10.1186/epjqt10.
Source: Springer Science+Business Media

Back to Table of contents

Primeur weekly 2014-08-18

Special

HPC computing based on the working of the human brain ...

Exascale supercomputing

NERSC, Intel, and Cray team up to prepare users for transition to exascale computing ...

The Cloud

Made in IBM Labs: Governing geographically dispersed Cloud data ...

IBM acquires Cloud security services provider Lighthouse Security Group ...

IBM opens first SoftLayer data centre in Canada ...

EuroFlash

European Commission to launch public survey on Net Innovation for the Work Programme 2016-2017 ...

SysFera joins ETP4HPC ...

Iberdrola stars work on construction of 66 megawatt Pier II wind farm in Mexico ...

Quantum simulators explained ...

USFlash

University of Michigan computer scientist reviews frontier technologies to determine fundamental limits of computer scaling ...

Finalists compete for coveted ACM Gordon Bell Prize in High Performance Computing ...

Florida Polytechnic University, Flagship Solutions Group and IBM announce supercomputing centre ...

Vancouver Film School selects HP Z workstations with AMD FirePro professional graphics ...

TACC's Stampede and Lonestar systems aid microbiome research of gum disease, diabetes, and Crohn's disease ...

CacheBox application acceleration software increases on-line transactions per second by 56x while reducing latency by 98% ...

Data-visualization tool identifies sources of aberrant results and recomputes visualizations without them ...

Penguin Computing's new line of Arctica Ethernet switches featuring x86 application compatibility now available ...

Altera releases Quartus II software Arria 10 edition v14.0 ...

IBM to receive approval for selling x86 supercomputer business to Lenovo ...