But it is not easy to count… view more  IMAGE: In this figure, the hopping amplitude and

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[ New ‘quantum’ approach helps solve an old problem in materials science ]

IMAGE:’In this figure, the hopping amplitude and existence of possible pathways for atomic migrations [panel (a)] can be identified at the microscopic level. But it is not easy to count… view more’

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An appealing technique often used in solving such problems is the technique of “quantum annealing”, a framework that tackles optimization problems by using “quantum tunneling”–a quantum physical phenomenon–to pick out an optimum solution out of several candidate solutions. Ironically, it is in quantum mechanical problems where the technique has found rather scarce application! “Chemists and material scientists, who deal with quantum problems, are mostly unfamiliar with quantum annealing and so do not think to use it. Finding applications of this technique is therefore important for increasing its recognition as a useful method in this domain,” says Prof. Ryo Maezono from Japan Advanced Institute of Science and Technology (JAIST), who specializes in applying information science to the field of materials science.

Publisher: EurekAlert!
Date: 2021-04-05 04:00:00 GMT/UTC
Twitter: @EurekAlert
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And here’s another article:

New ‘quantum’ approach helps solve an old problem in materials science

To that end, Prof. Maezono explored, in a recent study published in Scientific Reports, the phenomenon of ionic diffusion in solids, a topic of great interest in both pure and applied materials science, along with his colleagues, Keishu Utimula, a Ph.D. graduate in materials science from JAIST (in 2020) and lead author of the study, Prof. Kenta Hongo, and Prof. Kousuke Nakano, by applying a framework that combined quantum annealing with ab initio calculations, a method that calculates physical properties of materials without relying on experimental data. “While current ab initio techniques can provide information about diffusion path networks of the ions, it is difficult to map that information into useful knowledge of the diffusion coefficient, a practically relevant quantity,” explains Prof. Maezono.

Publisher: phys.org
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Could Quantum Computing Solve Maritime Complexities?

IBM and ExxonMobil explore how quantum computing could address the many complexities facing maritime transit.

Shipping route optimization is a difficult challenge to solve because of the need must account for several real-world variables that each have multiple solutions like the capacity of each ship, scheduling and finding the best route to minimize distance travelled. And the recent Suez Canal incident has only intensified the importance of improving the process.

This is why ExxonMobil is working with IBM to address explore the role quantum computing can play in optimizing maritime and vehicle shipping routes, a complex optimization problem that can be applied across not only maritime, but other industries such as automotive and supply chain.


Publisher: IndustryWeek
Date: Mar 31st, 2021
Author: Peter Fretty
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Chinese scientists challenge Google’s ‘quantum supremacy’ claim with new algorithm

So-called quantum supremacy is a development milestone: quantum machines being able to perform a calculation that is beyond the reach of the most powerful conventional supercomputers.

Google in October 2019 said its Sycamore processor had become the first to achieve quantum supremacy by completing a task in three minutes and 20 seconds that would have taken the best classical supercomputer, IBM’s Summit, 10,000 years.

That claim ‘ particularly how Google scientists arrived at the 10,000 years conclusion ‘ has been questioned by some researchers. They argue that with alternative algorithms or settings, the supercomputer’s processing time could in theory be brought down to just days, meaning it would not be too far off what Google’s Sycamore achieved.

Publisher: sg.news.yahoo.com
Twitter: @yahoosg
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Canada’s Defense Strategy Falls Behind in the Quantum Age

Even though new cybersecurity standards have been in development, the implementation of new standards is historically a slow process. Malicious actors can already retrieve encrypted information to later be decrypted using quantum computing methods when those methods become available. More than any other technology revolution, the everyday quantum reality requires foresight and readiness before its advent.’

The Defence Team’s announcement claims that its Quantum Science and Technology Strategy will ‘advanc[e] Canada’s defence, safety and security interests in the emerging field of quantum science’ and help ‘to take advantage of cutting-edge science and adapt to quantum innovation.’ This is, however, quite a generous title and aim for a document that focuses on research and development (R&D), investments, and operational partnerships for quantum sensing technology. Indeed, authored by the assistant deputy minister heading Defence Research and Development Canada (DRDC), the report is really a belated R&D road map for the agency.’

Publisher: www.lawfareblog.com
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