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Using a laser beam one quadrillion times brighter than the Sun, physicists have stopped electrons travelling at near-light speeds for the first time. The experiment produced a quantum mechanical phenomenon that was previously only thought to occur around black holes and quasars.

The fusion of quantum computing and machine learning has become a booming research area. Can it possibly live up to its high expectations?

Quantum dots are rapidly taking center stage in emerging applications and research developments, from enhanced LCD TVs and thin-film solar cells, to high-speed data transfer and fluorescent labeling in biomedical applications.

“Eventually, as the kinks are worked out, quantum machines will have a wide impact from scientific research to business. But there’s another area that could benefit from their problem-solving prowess too: Social impact.”

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By building the most general framework for the n-particle Hardy’s paradox and Hardy’s inequality, the results of the new paper provide a stronger Hardy’s paradox, and can also detect more quantum entangled states. As the success probability for the three-qubit generalized Hardy’s paradox reaches 0.25, the researchers are very hopeful that it will be observed in future experiments. Credit: Jiang, et al. © 2018 American Physical Society In 1993, physicist Lucien Hardy proposed an experiment showing that there is a small probability (around 6–9%) of observing a particle and its antiparticle in…

The Chinese “Micius” satellite has successfully set up the world’s most secure video conference, using quantum cryptography to connect scientists in Europe and China for an unhackable, intercontinental chat.

The feat marks another milestone for the satellite, officially called Quantum Experiments at Space Scale (QESS), which only last year was making headlines for transmitting an “unbreakable” quantum code to the Earth’s surface.

China has gathered 120 researchers from around the military to work for its top research institute as part of a push to develop military applications for artificial intelligence and quantum technology, state media reported.

Experts from within the military to work for its top research institute as China modernises its armed forces to give them cutting-edge equipment and arms.

Conventional electronics rely on controlling electric charge. Recently, researchers have been exploring the potential for a new technology, called spintronics, that relies on detecting and controlling a particle’s spin. This technology could lead to new types of more efficient and powerful devices.

In a paper published in Applied Physics Letters, researchers measured how strongly a charge carrier’s spin interacts with a magnetic field in diamond. This crucial property shows diamond as a promising material for spintronic devices.

Diamond is attractive because it would be easier to process and fabricate into spintronic devices than typical semiconductor materials, said Golrokh Akhgar, a physicist at La Trobe University in Australia. Conventional quantum devices are based on multiple thin layers of semiconductors, which require an elaborate fabrication process in an ultrahigh vacuum.

An idea for an experiment that could unite the stubborn fields of quantum mechanics and general relativity has been given new life by two groups of physicists from the UK.

The fact that quantum theory doesn’t play well with gravity is a massive stumbling block in physics, one that has long eluded some of the greatest minds in science.

Quantum mechanics is the modelling of discrete particles as probabilities that don’t truly exist until we’ve nailed down a measurement. Not that quantum physics is vague – a century of testing has made it one of the most robust theories in science.

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