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Strategies & Market Trends : 2026 TeoTwawKi ... 2032 Darkest Interregnum -- Ignore unavailable to you. Want to Upgrade?

To: Haim R. Branisteanu who wrote (166859)	1/8/2021 4:42:08 PM
From: TobagoJack	Respond to of 217836

I think the quantum satellite Mencius act was the spooky-action quantum passing of encryption key done between Austria and China. The research is hubbed out of Hefei city in China which I visited a few years back (2017?). The commercial service to be based on that service is meant for institutions (banks, etc) and is on trial. The cellular phone thing I admit until just now I hadn’t heard of it and do not know its nature. Watch & brief. As far as security is concerned, suspect the on- / off- ramps are the weak spots, but again, do not know.

To: Haim R. Branisteanu who wrote (166859)	1/15/2021 4:22:20 AM
From: TobagoJack	Read Replies (1) \| Respond to of 217836

Re <<TJ this is not "quantum" call but a old technology used in SINCGARS (https://en.wikipedia.org/wiki/SINCGARS) a telecommunication system I worked on in 1982/3 on its R&D>> I continue to watch & brief, because I do not know the technology, and cannot discern until others guide Together w/ this earlier blurb, scmp.com <<China Telecom launches quantum encrypted phone calls on smartphones in a new pilot programme>>, with China Telecom being one of the companies Team Trump saw fit to sanction as military affiliated, which I guess ATT is similarly military-affiliated now report in that quantum network readying More than 150 users from industries, including finance, electric power and the government took part in the trial and aspects of the experiment. The State Grid’s Beijing headquarters sent encrypted data to its branch in far western Xinjiang through the QKD channel. The researchers have developed portable ground stations – weighing about 100kg (220 pounds) – to connect with the Micius satellite as well as other ground stations overseas. Their goal is to further miniaturise transmission stations to eventually be carried by a person. Meanwhile, transmission modules that could be loaded on to other satellites were also ready. scmp.com China’s experiment in quantum communication brings Beijing closer to creating a hack-proof network Pan Jianwei and team report in science journal the results of two-year test for an integrated space-to-ground networkChina is positioning itself to be a world leader in quantum technology, including drafting international standards Liu Zhen in Beijing Published: 5:00am, 9 Jan, 2021 China’s hack-proof quantum communication technology is “primarily ready” for practical use after a 4,600km (2,858 mile) network was put through two years of experimental service, researchers announced. Since early 2019, the integrated space-to-ground quantum communication network has proved its “practical security”, and “maintained long-term reliability and stability” through ground fibres and achieved an adequately fast link with a satellite, according to a paper by the researchers published in the science journal Nature on Wednesday. It is a milestone for China in its mission to develop a secure communications network free from hacking, and also provides an opportunity for China to take a lead role in quantum technology internationally. The Chinese scientists have been drafting international standards for relevant technologies with the International Organisation for Standardisation and other groups. “Such a prototype of integrated space-to-ground network has laid a scientific and technological foundation for a secure quantum communication global network in the future,” said Science and Technology Daily, the official newspaper of the Ministry of Science and Technology. In theory, the laws of physics ensure hacking attempts on the messages transmitted through quantum entanglement-based channels cause a physical change allowing them to be discovered and an alert raised. When fully developed, quantum communication can be applied in fields such as finance, defence, government administration and electronic information, according to scientists. In the Nature article the team led by Professor Pan Jianwei from the University of Science and Technology of China summarised their work and reviewed the operation of the network that was used by an unprecedented number of users distributed over a wide area. This network consisted of the Micius satellite – the world’s first quantum communication satellite launched in 2016 – and more than 700 optical fibres covering 2,000km and connecting 32 nodes across four provinces and three municipalities in China. It was completed in 2017 and has realised communication up to a distance of 4,600km. The integrated space-to-ground quantum communication network “maintained long-term reliability and stability” through ground fibres and a speedy enough link with the satellite, according to Chinese researchers. Image: Weibo It was the world’s first quantum communication experiment of this scale and as such the network on trial applied the technology of quantum key distribution (QKD). QKD is a secure communication and information transfer technology that encrypts based on the phenomenon of “quantum entanglement”, in which a pair of entangled particles remain connected and affect each other even when separated by great distances. It created links between the ground nodes as well as high-speed satellite-to-ground free-space QKD links with the satellite. “Using a trusted relay structure, the fibre network on the ground covers more than 2,000km, provides practical security against the imperfections of realistic devices, and maintains long-term reliability and stability,” the Chinese team reported in Nature. Chinese, Oxford scientists achieve increased security in quantum communication 16 Jun 2020 The satellite-to-ground QKD became more than 40 times higher than previous technologies in its “secret-key” rate, at 47.8 kilobits per second, the article said. The satellite-to-ground QKD channel loss was comparable to the loss between a geostationary satellite and the ground. It could be feasible to construct more versatile and ultralong quantum links via geosynchronous satellites, the article said. More than 150 users from industries, including finance, electric power and the government took part in the trial and aspects of the experiment. The State Grid’s Beijing headquarters sent encrypted data to its branch in far western Xinjiang through the QKD channel. The researchers have developed portable ground stations – weighing about 100kg (220 pounds) – to connect with the Micius satellite as well as other ground stations overseas. Their goal is to further miniaturise transmission stations to eventually be carried by a person. Meanwhile, transmission modules that could be loaded on to other satellites were also ready. In December, a team of Chinese physicists, also led by Pan, said they had built a quantum computer one trillion times faster than the most powerful supercomputer, claiming “quantum supremacy”.