Photon quantum teleported from Earth to orbit

So, in the future when I entangle my twin and he goes to mars and I fart, my state of fartedness will be teleported instantaneosly to my twin, causing global warming there ... Cool stuff
 
The_Assimilator said:
They transmitted the state of the photon to its quantum twin, not the photon itself. It's not teleportation, but light-speed transmission of a single bit of data.

And we've had the ability to transmit much larger quantities of data at exactly the same speed for decades... you might want to look up this little concept called "radio waves".
Click to expand...

No dude, the photons are are entangled and then transferred to the satellite at light speed, where entanglement is confirmed on some of them (if there were no interference etc. on the way up)
Quantum entanglement is always instant, not at the speed of light.

Also, entanglement cannot be used to transmit data since observation breaks entanglement (this is why it's great for cryptography since you can determine whether someone observed data)... entanglement can only be inferred after the fact.

"if you could measure a particle's state in a way that forced a particular outcome-- you could absolutely send information this way. But you can't do that."
--->
"there’s a problem: entanglement only works if you ask a particle, “what state are you in?” If you force an entangled particle into a particular state, you break the entanglement, and the measurement you make on Earth is completely independent of the measurement at the distant star. If you had simply measured the distant particle to be +1 or -1, then your measurement, here on Earth, of either -1 or +1 (respectively) would give you information about the particle located light years away. But by forcing that distant particle to be +1 or -1, that means, no matter the outcome, your particle here on Earth has a 50/50 shot of being +1 or -1, with no bearing on the particle so many light years distant."

The Real Reasons Quantum Entanglement Doesn't Allow Faster-Than-Light Communication
https://www.forbes.com/sites/chador...faster-than-light-communication/#2c6431003a1e

What I'd like to know is how this works in relation to lasers. From my understanding photon entanglement occurs when photons cross/collide with each other... and I know photons "want" to be the same when in close proximity, which is what happens when they take on each other's properties when bounced around many times inside a laser gas chamber (creating photons with the same wave properties).. does this mean that many photons exiting a laser chamber are in effect entangled with photons that have left the laser chamber? The mind boggles.

EDIT: If I wasn't an idiot I assume my answer might be somewhere in this paper:
Spatial multimode entanglement within one laser beam
https://arxiv.org/abs/0812.4686
 
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Wait...
This was done by China?
The same China that is starting a 200 day orbital simulation?

I call shenanigans.
 
RaptorSA said:
No dude, the photons are are entangled and then transferred to the satellite at light speed, where entanglement is confirmed on some of them (if there were no interference etc. on the way up)
Quantum entanglement is always instant, not at the speed of light.

Also, entanglement cannot be used to transmit data since observation breaks entanglement (this is why it's great for cryptography since you can determine whether someone observed data)... entanglement can only be inferred after the fact.

"if you could measure a particle's state in a way that forced a particular outcome-- you could absolutely send information this way. But you can't do that."
--->
"there’s a problem: entanglement only works if you ask a particle, “what state are you in?” If you force an entangled particle into a particular state, you break the entanglement, and the measurement you make on Earth is completely independent of the measurement at the distant star. If you had simply measured the distant particle to be +1 or -1, then your measurement, here on Earth, of either -1 or +1 (respectively) would give you information about the particle located light years away. But by forcing that distant particle to be +1 or -1, that means, no matter the outcome, your particle here on Earth has a 50/50 shot of being +1 or -1, with no bearing on the particle so many light years distant."

The Real Reasons Quantum Entanglement Doesn't Allow Faster-Than-Light Communication
https://www.forbes.com/sites/chador...faster-than-light-communication/#2c6431003a1e

What I'd like to know is how this works in relation to lasers. From my understanding photon entanglement occurs when photons cross/collide with each other... and I know photons "want" to be the same when in close proximity, which is what happens when they take on each other's properties when bounced around many times inside a laser gas chamber (creating photons with the same wave properties).. does this mean that many photons exiting a laser chamber are in effect entangled with photons that have left the laser chamber? The mind boggles.

EDIT: If I wasn't an idiot I assume my answer might be somewhere in this paper:
Spatial multimode entanglement within one laser beam
https://arxiv.org/abs/0812.4686
Click to expand...
https://arstechnica.com/science/201...ent-between-qubits-age-limit-checks-in-place/

That paper on why superluminal communication is impossible doesn't make a terribly convincing case.
 
RaptorSA said:
Fair enough, if they could hack it using multiple pairs and statistical probability... but one the level of one photon/atom the article holds up.
Would be insane if someone could crack it. One thing that comes to mind is the issues with Mars to Earth communication.
Click to expand...
No, I've heard this story before. First it's the mission to Mars. Then comes the non-local quantum communication. Then comes the lag-free internet gaming on Mars, Phobos and Deimos, and that's when the interdimensional demons arrive and everything goes to hell.

:whistle:
 
K3NS31 said:
Here's an article that explains it a bit better - http://newatlas.com/quantum-entanglement-satellite-distance-record/50071/
Click to expand...

"Instead of physical fibers, the system sends entangled photons via laser beams, and although that can help minimize interference, lining up the source and the receiver brings its own challenges – especially when the satellite is moving so fast."
"It will be like tossing a coin from a plane at 100,000 meters above the sea level exactly into the slot of a rotating piggy bank," Wang Jianyu

Pretty insane if you think about it.
Reminds me of this (and must be orders of magnitude more accurate):

AMATEUR ASTRONOMERS FLASH THE SPACE STATION
https://www.universetoday.com/93987/amateur-astronomers-flash-the-space-station/
 
RaptorSA said:
Yeah the crazy thing is it was just a 1 Watt blue laser.
The one I bought for cheap off Bidorbuy is like 1.2 Watt.
Click to expand...

Really?! Those go for like 20 bucks on the Chinese websites. Look out ISS...
 
Xarog said:
No, I've heard this story before. First it's the mission to Mars. Then comes the non-local quantum communication. Then comes the lag-free internet gaming on Mars, Phobos and Deimos, and that's when the interdimensional demons arrive and everything goes to hell.

:whistle:
Click to expand...

Bring on the demons.
I'm more worried about the literally instant internet outrage over nothing....
 
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