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[PopSci] China Launches Quantum Satellite in search for unhackable communications  

post #1 of 15
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Quote:
On August 16, 2016, China became the first country in the world to launch a quantum communications satellite, in what it hopes will be a key step to creating an unhackable communications system.

Source

Well I had predicted that it could be done, I just wasn't so sure it would be done so quickly, and because of how quantum states work they could possibly have a throughput to match and even exceed fiber optics cable. Roughly the current fastest single fiber option is 43tbps. But the way these communications work is by lasers, and the fastest laser switching speed in in the picoseconds, or one trillionth of a second. A trillion bits per second anyone?
Edited by Maelthras - 8/25/16 at 11:41pm
post #2 of 15
Nope.
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post #3 of 15
Sure lasers work that fast but none of the other underlying technology can. So this is simply not happening.
post #4 of 15
Needs a source link.
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post #5 of 15
Quote:
CHINA LAUNCHES QUANTUM SATELLITE IN SEARCH OF UNHACKABLE COMMUNICATIONS
No they didn't. True quantum computing doesnt exist and we definitely do not have true quantum tunneling and teleportation for use in communication. So they cant possibly have launched something that does not exist yet.
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post #6 of 15
Quote:
Originally Posted by EniGma1987 View Post

No they didn't. True quantum computing doesnt exist and we definitely do not have true quantum tunneling and teleportation for use in communication. So they cant possibly have launched something that does not exist yet.

Quantum communication is a thing... you just need entangled particles to transmit data. When someone snoops on it, the state is changed and that change is detected. It really has nothing to do with quantum computers.
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post #7 of 15
Quote:
Originally Posted by umeng2002 View Post

Quantum communication is a thing... you just need entangled particles to transmit data. When someone snoops on it, the state is changed and that change is detected. It really has nothing to do with quantum computers.

Yes I know quantum communication is a thing, but it doesn't exist on any scale even remotely usable for a actual communication service. A few scientists in some labs have done a few tests and managed to transmit a couple of qubits at best. Nothing even remotely close to a working communication device. So again, China saying they launch a quantum communication satellite is BS because the tech doesn't yet exist.
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post #8 of 15
"because the tech doesn't yet exist"
well, we don't know until there's a concrete proof.

in the last 2 years they discovered and evolved so many technologies, more than any other countries...
post #9 of 15
Quote:
Originally Posted by jmcosta View Post

"because the tech doesn't yet exist"
well, we don't know until there's a concrete proof.

in the last 2 years they discovered and evolved so many technologies, more than any other countries...

The greatest think tanks and scientists devoted to the area can barely teleport a couple of atoms for a few miles. You expect a small team of people to have done something the rest of the combined world expects will take at least a decade? No, the reality is China launched a new satellite that uses another form of communication and they like to wow press by calling it a quantum communication satellite. Its maybe about as quantum as Samsung and LG's Quantum Dot tech in TVs, probably less so.
Edited by EniGma1987 - 8/25/16 at 9:03pm
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post #10 of 15
You can bet if China or Russia releases something, the U.S. has already secretly had it for the last 10 years wink.gif
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