21st Century Innovative Technologies and Developments as also discoveries, curiosity ( insolite)...

Chinese scientists claim to have built a quantum computer that is able to perform certain computations nearly 100 trillion times faster than the world’s most advanced supercomputer, representing the first milestone in the country’s efforts to develop the technology.

The researchers have built a quantum computer prototype that is able to detect up to 76 photons through Gaussian boson sampling, a standard simulation algorithm, the state-run Xinhua news agency said, citing research published in Science magazine. That’s exponentially faster than existing supercomputers.

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La Chine est-elle en passe de trouver une parade contre le cyberespionnage ? Ce lundi 15 août, elle a lancé un satellite baptisé Quess (pour Quantum Experiments at Space Scale, en anglais) et équipé d’un système de communication quantique qui pourrait bien révolutionner la sécurité des communications. Ce satellite sera utilisé pour transmettre des clés de chiffrement quantiques, virtuellement impossibles à intercepter par un tiers. Il s’agit là d’une technologie de cryptage particulièrement efficace pour protéger le contenu des données et qui intéresse également les gouvernements européens, canadiens et américains.

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Following what Einstein called “spooky action at a distance,” entangled particles exist in a special state that allows information carried in one to be instantaneously reflected in another — a sort of quantum teleportation.

Researchers have recently made significant progress in building this quantum communication network. China launched the world’s first quantum communication satellite last year, and they’ve since been busy testing and extending the limitations of sending entangled photons from space to ground stations on Earth and then back again. They’ve also managed to store information using quantum memory. By the end of August, the nation plans to have a working quantum communication network to boost the Beijing-Shanghai internet.

Leading these efforts is Jian-Wei Pan of the University of Science and Technology of China, and he expects that a global quantum network could exist by 2030. That means a quantum internet is just 13 years away, if all goes well.

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