Tezaab actor Anil Kapoor applauds Jacqueline Fernandez for Ek do teen!
Facebook updates Messenger with admin privileges for group chats
OnePlus 6 specifications leaked online, check details here
Nissan will produce a MILLION electrified cars annually by 2022
Dropbox Prices IPO Above Expectations At $21
Chinese scientists demonstrate quantum communication between space and ground stations
18 June 2017, 01:24 | Lucia Cruz
The lead author Juan Yin said, "We have demonstrated the distribution of two entangled photonsfrom a satellite to two ground stations that are 1,203 kilometers apart".
The latter refers to entanglement-based quantum key distribution, which is so far the only way to establish secure keys between two distant locations on Earth without relying on trustful relay. Entangled photos are pairs of photos with linked properties and they remain that way even if they are separated by a distance. There's a lot less stuff to get in the way and destroy entangled particles when they're sent from space, so the particles can be transmitted across much greater distances.
Pairs of entangled photons fired to ground stations can then form a 'secret key'.
Project leader Jian-Wei Pan, a physicist at the University of Science and Technology of China, proposed the project almost 15 years ago. They found the photons had opposite polarizations far more often than would be expected by chance, thus confirming spooky action over a record distance (though the 2015 test over a shorter distance was more stringent).
Anton Zeilinger, a physicist at the Austrian Academy of Sciences in Vienna and one of the first to propose the idea of a quantum internet, told Science the experiment "shows that China is making the right decisions". "So how can you do similar experiments at thousand-kilometers distance scale and with the optical elements vibrating and moving at a speed of 8 kilometers per second [5 miles per second]?"
The separation between the satellite and these ground stations varied from 310 to 1,243 miles (500-2,000 km).
BJP emerges single largest party in Shimla Municipal polls,
Dhumal is challenged by Union Health Minister JP Nadda, who is trying to return to state politics ahead of the Assembly elections. It thus ruled the civic body with its three members in the then 25-seat House - a majority of the councillors were from the BJP.
Scientists were absolutely floored by a groundbreaking discovery that could change our understanding of quantum physics.
. Essentially, entangled photons' sensitivity to interference can actually work to their advantage: when hackers try to steal the information, the signal immediately becomes unreadable and alerts the users to the presence of the hack.
That distance is 10 times greater than the previous record for entanglement. "It's very encouraging." However, Ling notes that Pan's team recovered only about one photon out of every 6 million sent from the satellite-far better than ground-based experiments but still far too few for practical quantum communication.
Other countries have joined the race for space-based quantum communication.
"I'm personally convinced that the internet of the future will be based on these quantum principles".
Above image: A solar wing deployment test for the experimental quantum communication satellite at the Jiuquan Satellite Launch Center in Jiuquan, northwest China's Gansu Province, July 30 2016. For one, its relatively low orbit means each ground station has coverage for only about 5 minutes each day, and the wavelength of photons used means it can only operate at night, he said. The obtained link efficiency is orders of magnitude higher than that of the direct bidirectional transmission of two photons through telecommunication fibers.
At its core, the technique is similar to encryption methods now used to protect information transmitted by Internet users, the British media outlet explained, but unlike that method, the new quantum-based technique hides the key required to unscramble the encrypted data in photons.
Stocks march on as Fed rate hike looms, dollar steady
The year-on-year gain in the CPI in May was still larger than the 1.6 percent average annual increase over the past 10 years. The Australian dollar is little changed at.7578 per dollar after Australia's jobs report crushed expectations.
Lonzo Ball pokes fun at his father in new commercial
The overwhelming majority of mocks are predicting that the Sixers are going to take Josh Jackson with the third pick. L.A. also has the No.28 overall pick in the first round, which they acquired in a trade with the Houston Rockets.
Atari is indeed working on a new console, says CEO
That mini-retro console was a big hit despite only coming with 30 games and having wired controllers with short cables. This is exactly the path Microsoft and Sony took when Xbox One and PlayStation 4 were still in development.
7 missing after US Navy destroyer collision off Japan coast
Footage from Japanese broadcaster NHK showed a person in a stretcher being lifted from the deck to a Japan Coast Guard helicopter. According to a statement from USA 7th Fleet the USS Fitzgerald sustained significant damage, both above and below the waterline.
A look at all 10 of Rafael Nadal's French Open finals
After his success at Roland Garros , Nadal climbed to second in the rankings, cutting the gap on Andy Murray to just 2605 points. But not only here: since the beginning of the year, you can see he's playing more aggressively, staying closer to the line.