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Primeur weekly 2018-02-26

Focus

The European Processor Initiative (EPI) to develop the processor that will be at the heart of the European exascale supercomputer effort ...

Quantum computing

Unconventional superconductor may be used to create quantum computers of the future ...

Developing reliable quantum computers: International research team makes important step on the path to solving certification problems ...

Programming on a silicon quantum chip ...

D-Wave locks in $20 million funding and completes prototype of next-gen quantum processor ...

Focus on Europe

Luxembourg joins the European supercomputer network PRACE ...

ICEI Public Information Event on the realisation of a federated HPC and data analytics infrastructure ...

Dutch eScience and Lorentz Centers launch Call to host workshop on digitally enhanced research ...

Middleware

Adaptive Computing announces release of Moab HPC Suite 9.1.2 ...

NCSA Assistant Director Dan Katz named BSSw Fellow ...

University of Nevada, Las Vegas' supercomputing boosted through new collaboration with Altair ...

Hardware

C-DAC focusing on cancer treatment using supercomputers as a tool ...

South-Korean Ministry of Science and Technology to announce Second National High-Performance Computing Fundamental Plan ...

IBM reveals novel energy-saving optical receiver with a new record of rapid power-on/off time ...

Computers learn to learn: Intel and researchers from Heidelberg and Dresden present three new neuromorphic chips ...

HPE helps U.S. Department of Defense to advance national defense capabilities ...

OCF deploys petascale Lenovo supercomputer at University of Southampton ...

HPE reports fiscal 2018 first quarter results ...

Ranovus announces general availability of its on-board optics and CFP2 direct detect transceiver products for 5G mobility and data centre interconnect applications ...

Mellanox appoints Steve Sanghi and Umesh Padval to Board of Directors ...

Applications

Supercomputers aid discovery of new, inexpensive material to make LEDs with high colour quality ...

AI companies to reuse crypto mining farms for deep learning in health care ...

Computer scientists and materials researchers collaborate to optimize steel classification ...

Boris Kaus receives ERC Consolidator Grant for his research in magmatic processes ...

Metabolic modelling becomes three-dimensional ...

Powerful supercomputer unlocks possibilities for tinier devices and affordable DNA sequencing ...

New Berkeley Lab algorithms create "Minimalist Machine Learning" that analyzes images from very little information ...

The Cloud

Adaptive Computing makes HPC Cloud strategies more accessible with the Moab/NODUS Cloud Bursting 1.1.0 release ...

USFlash

Gen-Z Consortium announces the public release of its Core Specification 1.0 ...

Developing reliable quantum computers: International research team makes important step on the path to solving certification problems


This is an illustration: Quantum Optics and Statistics. Credit: University of Freiburg.
22 Feb 2018 Freiburg - Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can't manage. But how do you test a quantum computer to ensure it is working reliably? Depending on the algorithmic task, this could be an easy or a very difficult certification problem. An international team of researchers has taken an important step towards solving a difficult variation of this problem, using a statistical approach developed at the University of Freiburg. The results of their study are published in the latest edition ofNature Photonics.

Their example of a difficult certification problem is sorting a defined number of photons after they have gone through a defined arrangement of several optical elements. The arrangement provides each photon with a number of transmission paths - depending on whether the photon is reflected or transmitted by an optical element. The task is to predict the probability of photons leaving the arrangement at defined points, for a given positioning of the photons at the entrance to the arrangement.

With increasing size of the optical arrangement and increasing numbers of photons sent on their way, the number of possible paths and distributions of the photons at the end rises steeply as a result of the uncertainty principle which underlies quantum mechanics - so that there can be no prediction of the exact probability using the computers available to us today. Physical principles say that different types of particle - such as photons or electrons - should yield differing probability distributions. But how can scientists tell these distributions and differing optical arrangements apart when there is no way of making exact calculations?

An approach developed in Freiburg by researchers from Rome, Milan; Redmond, USA; Paris, and Freiburg now makes it possible for the first time to identify characteristic statistical signatures across unmeasurable probability distributions. Instead of a complete "fingerprint", they were able to distill the information from data sets which were reduced to make them usable. Using that information, they were able to discriminate various particle types and distinctive features of optical arrangements. The team also showed that this distillation process can be improved, drawing upon established techniques of machine learning, whereby physics provides the key information on which data set should be used to seek the relevant patterns. And because this approach becomes more accurate for bigger numbers of particles, the researchers hope that their findings take us a key step closer to solving the certification problem.

Taira Giordani, Fulvio Flamini, Matteo Pompili, Niko Viggianiello, Nicolò Spagnolo, Andrea Crespi, Roberto Osellame, Nathan Wiebe, Mattia Walschaers, Andreas Buchleitner and Fabio Sciarrino are the authors of the paper titled " Experimental statistical signature of many-body quantum interference ". It has been published inNature Photonics.

Source: Albert-Ludwigs-Universität Freiburg

Back to Table of contents

Primeur weekly 2018-02-26

Focus

The European Processor Initiative (EPI) to develop the processor that will be at the heart of the European exascale supercomputer effort ...

Quantum computing

Unconventional superconductor may be used to create quantum computers of the future ...

Developing reliable quantum computers: International research team makes important step on the path to solving certification problems ...

Programming on a silicon quantum chip ...

D-Wave locks in $20 million funding and completes prototype of next-gen quantum processor ...

Focus on Europe

Luxembourg joins the European supercomputer network PRACE ...

ICEI Public Information Event on the realisation of a federated HPC and data analytics infrastructure ...

Dutch eScience and Lorentz Centers launch Call to host workshop on digitally enhanced research ...

Middleware

Adaptive Computing announces release of Moab HPC Suite 9.1.2 ...

NCSA Assistant Director Dan Katz named BSSw Fellow ...

University of Nevada, Las Vegas' supercomputing boosted through new collaboration with Altair ...

Hardware

C-DAC focusing on cancer treatment using supercomputers as a tool ...

South-Korean Ministry of Science and Technology to announce Second National High-Performance Computing Fundamental Plan ...

IBM reveals novel energy-saving optical receiver with a new record of rapid power-on/off time ...

Computers learn to learn: Intel and researchers from Heidelberg and Dresden present three new neuromorphic chips ...

HPE helps U.S. Department of Defense to advance national defense capabilities ...

OCF deploys petascale Lenovo supercomputer at University of Southampton ...

HPE reports fiscal 2018 first quarter results ...

Ranovus announces general availability of its on-board optics and CFP2 direct detect transceiver products for 5G mobility and data centre interconnect applications ...

Mellanox appoints Steve Sanghi and Umesh Padval to Board of Directors ...

Applications

Supercomputers aid discovery of new, inexpensive material to make LEDs with high colour quality ...

AI companies to reuse crypto mining farms for deep learning in health care ...

Computer scientists and materials researchers collaborate to optimize steel classification ...

Boris Kaus receives ERC Consolidator Grant for his research in magmatic processes ...

Metabolic modelling becomes three-dimensional ...

Powerful supercomputer unlocks possibilities for tinier devices and affordable DNA sequencing ...

New Berkeley Lab algorithms create "Minimalist Machine Learning" that analyzes images from very little information ...

The Cloud

Adaptive Computing makes HPC Cloud strategies more accessible with the Moab/NODUS Cloud Bursting 1.1.0 release ...

USFlash

Gen-Z Consortium announces the public release of its Core Specification 1.0 ...