Neil deGrasse Tyson Explains Quantum Entanglement

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[StarTalk]

New Video: Watch Neil deGrasse Tyson explain quantum entanglement and the possibility of using entangled particles as faster-than-light communication to Eugene Mirman in this StarTalk Radio Cosmic Query: Neil deGrasse Tyson Explains Quantum Entanglement

[MrTyler]

We don't transmit data faster than light. The teleportation they are talking about is just preserving a copy of the state of a particle, moving that information somewhere else, and imbuing another particle with that stored state, effectively teleporting it. Entanglement itself can't transmit data because of the uncertainty of measuring the state of a particle. You will just get random (though correlated) data at both ends which is totally useless (as far as we know at this point).

[NDRNTCH]

Is there a StarTalk video about superluminal travel and the warp drive? If not, please make one!

[MyGroo]

I must say this was a really unexpected way of phrasing things, for someone as famous as Tyson. One of the most known statements by Coleman, for example, is that Quantum Mechanics does *not* allow any faster-that-light transmission of information. Quantum entanglement violates *local realism*, not *locality*. I.e. pretty much every physicist for the last 100 years or so has been telling that quantum correlation is *not* spooky action at a distance.

[theoya]

There have also been possibilities posed involving wormholes, but in order to create one that is stable and large enough to go through would require the existence of matter with negative mass, which is not something that has yet been observed.

[therealbr]

Entangled particles have remained connected over several kilometres. The problem is that there is no way to communicate with them faster than light - this has been proven within QM. It is not just a matter of scaling entanglement up - that won't help in the slightest, so Neil is a bit misleading here.

[billyuno]

I think it would be easier to learn to manipulate and observe the small scale, or have systematic methods for doing so than to try to scale up. For example a human voice vibrates a membrane which manipulates a quantum particle to vibrate, and the entangled particle vibration is observed and translated into sound. There you go. Of course it's not that easy, but... y'know. Details.

[Niosus]

Those are different things. Quantum teleportation happens on nano scale and has to do with the uncertainty principle. It does not happen on macro scales at all. The entanglement is possible to do on macro scales, I think they've even managed to put over 100km between entangled particles. The issue is that no useful information can be sent using that technique as far as we know.

[spencertaberski]

Couldn't you just use two pairs of particles that are entangled, have one pair stand for a "slash" and the other pair stand for a "dot" and just use Morse Code to communicate long distances? Or am I missing something.

[jg]

This might be a dumb question, but in regards to quantum entanglement, since entangled pairs share properties regardless of space between them. What would happen if one particle of an entangled pair were to cross into the event horizon of a black hole while it's companion was outside, would we be able to gain any information from it if we were to measure it's companion particle?

[JoeGuardsman]

Using quantum entanglement as a form of communication sounded interesting. I wonder if the agitation of one particle could be interpreted through the other entangled particle like Morse code or binary. I have no idea though the distance through which quantum entanglement can take place or if it can be interpreted.

[ktx]

....of spin states(heads/tails)...in this way someone could create a binary code where a "1" is sent as a short non-random sequence of heads or tails and where a "0" is sent as randomized segments of spin states(heads/tails). I haven't found the flaw yet but I'm pretty sure mother nature won't allow this to work for whatever reason

[Niosus]

a nuke uses the energy stored in the bonds between particles in the nucleus. A single particle doesn't have any bonds so you can't use those.

You could probably collide it with another particle to transform its mass into energy, but I'm pretty sure you will break the bond before you can get it to collide with anything.

[sholmesbrown]

I hate to say it but quantum entanglement will never allow FTL communication. Simple reason why is if each entangled experiment were at each side of the universe there is no way to know what information is being sent unless you also know the results of the other entangled experiment. Results from each would be random until compared to one another but to do that you need to be physically close so it mutes the FTL point. Vertasium does a great video explaining this. NDgT is not a physicist i think he missed the mark on this answer.

[Timilias]

That's in one of his other videos and also plenty here on youtube. Nothing can travel faster than a speed of light, but we can, using warp technology (and in theory) create an object that will alter the space-time around it and therefore move up to 10 times the speed of light. Problem is you need a massive amounts of energy (originally thought the mass of Jupiter - now I believe down to what America consumes in a year) to do that - and, further testing is required.

[imcnagpc]

I love NdGT in a velvet pajama top explaining science. "Neil after dark" would be a cool show. (who needs Hefner?)

[philp]

Shouldn't we be able to use two entangled particles as a telegraph wire though?

[calebpoemoceah]

Is this what smell is? Because if the smallest particles are atoms befor you break them open into gluons and quorks were does the smell come from, and could smell also be the quantum entanglement of atoms?

[bettertraining]

What's the top hypothesis on how/why entanglement happens?

[bradvan]

so... if you make a nuke with a entangled particle and have the second particle in a different location, would the 2nd particle also cause a nuclear explosion ? Undetectable nuclear particle bomb that could be anywhere ? ? ?