New invention promises quantum internet that can’t be hacked

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  • Scientists devise the largest-ever quantum communications network.
  • The technology is much cheaper than previous attempts and promises to be hacker-proof.
  • The ‘multiplexing’ system devised by the researchers splits light particles that carry information.

Scientists are closer to creating a hacker-proof quantum internet thanks to a promising new invention. A team led by the University of Bristol in the U.K. found a method of securing online communication that relies on the laws of physics.

The approach aims to make any message sent over the internet interception-proof. 

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Artificial Intelligence Is Now Smart Enough to Know When It Can’t Be Trusted

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(akinbostanci/Getty Images)TECHDAVID NIELD 25 NOVEMBER 2020

How might The Terminator have played out if Skynet had decided it probably wasn’t responsible enough to hold the keys to the entire US nuclear arsenal? As it turns out, scientists may just have saved us from such a future AI-led apocalypse, by creating neural networks that know when they’re untrustworthy.

These deep learning neural networks are designed to mimic the human brain by weighing up a multitude of factors in balance with each other, spotting patterns in masses of data that humans don’t have the capacity to analyse.

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In quantum entanglement first, scientists link distant large objects

Light goes through the atomic cloud in the center and falls onto the membrane on the left. Because of the interaction with light the precession of atomic spins and vibration of the membrane become quantum correlated. Credit: Niels Bohr Institute

Researchers accomplished quantum entanglement between a mechanical oscillator and a cloud of atoms.The feat promises application in quantum communication and quantum sensors.Quantum entanglement involves linking two objects, making them behave as one at a distance.

Scientists entangled two large quantum objects, both at different locations from each other, in a quantum mechanics first. The feat is a step towards practical application of a rather counterintuitive phenomenon and was accomplished by a team from the Niels Bohr Institute at the University of Copenhagen.

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Menor exposição a telas de computadores, celulares e televisão durante as atividades de lazer relacionada com melhor cognição entre as crianças

 

 

 

 

 

Crianças que passam menos de duas horas por dia fazendo atividades de lazer diante de telas de computador, tablet ou celular, como acessar mídias sociais na internet e assistir televisão, e que conseguem dormir o suficiente e praticar mais atividades físicas, têm melhor cognição do que as crianças que passam mais tempo em atividades diante das telas, que dormem menos e praticam menos atividades físicas, sugere nova pesquisa.

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The empty brain

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No matter how hard they try, brain scientists and cognitive psychologists will never find a copy of Beethoven’s 5th Symphony in the brain – or copies of words, pictures, grammatical rules or any other kinds of environmental stimuli. The human brain isn’t really empty, of course. But it does not contain most of the things people think it does – not even simple things such as ‘memories’. Leer Más