Scientists unveil the first-ever image of quantum entanglement

What implications does this have for our understanding of the universe? How about space travel? We will be vacationing on Alpha Centauri?

 

None!


That requires going beyond Quantum Mechanics and beyond Relativity too.
Similar to Relativity being beyond Newtonian mechanics.


Moi

​

 

Now they can place an updated image in quantum physics textbooks.

 

Criminy, do you ever read the articles you link to?

 

Entanglement may eventually have implications for communications but that's about it. Computation perhaps but that is unlikely barring some new understanding.

 

Well, the big news is that they photographed it. I thought that when it's observed a quantum effect collapses. So if it was a photo of a photon in superposition then we are witnessing something that was heretofore impossible.

 

The picture is neat but rather insignificant to anything but imaging....entanglement has been long known and verified.

 

They must capture the image before the collapse occurs.

The act of observation causes the collapse.

 

What Schrodinger never told you is that if you open the box fast enough, you see a live cat and a dead cat.

But other experiments in recent years suggested that even the POTENTIAL for observation kills the superposition of Eigenstates. So maybe that didn't turn out to be true. I know that in one experiment, the wavelike nature of photons disappears if even the potential to identify a unique position exists, even if you don't. Maybe that isn't directly related.

 

But yet we can't get a picture of the flat earth....I'm calling this "fake new"

 

This is Schrodinger cat... Gus

 

Here's more:

 

A mind-blowing phenomenon.

Why just on the mico scale?

 

What do you mean? Do you want a transporter?

This is the transmission of information. Not only would the amount of information needed to fully describe a person be insanely large, you also have to destroy the original in order to produce an exact copy on the other end.

Would an exact copy of you actually BE you? There is an argument from quantum mechanics that says it IS you. But we don't understand the true nature of consciousness. So we can't know if the arguments apply. Some argue that the self, or the self-aware identity, requires continuity. If it abruptly ended while the information is transported, that consciousness would end; aka, the person effectively dies. But then that suggests the possibility that we die each night when we sleep. The person yesterday is dead and a new person gets up in the morning.

Neither you [or the new you], or anyone else, could ever know if it is or isn't the original you. You would have identical memories and believe them to be your own, even if the old you is really dead.

 

I always found Star Trek style transporters to be an odd idea. It just makes an exact copy of you (its a replicator), then literally kills the original only to prevent there from being two...

 

Yep, it all gets back to the question of what constitutes our self-aware identity. Then, can that essence be transmitted as information, or is there some issue like continuity, or even something deeper about our essence that we don't understand, that cannot be transmitted purely as information.

But then again, an emerging paradigm is that all that really exists, is information. Concepts like energy, momentum, mass, spin, charge, the forces of nature, quantum mechanical Eigenstates... are all just different manifestation of the most fundamental concept - the building blocks of reality - information. In other words, it is possible that our very essence IS information.

 

I wouldn't step on the transporter pad to find out. They'd have to 'McCoy' me, at least the first time.

Though it could be an interesting (read: EVIL) weapon- grab someone with the transporter beam and rematerialize them with the molecules spaced too far apart... They did that to some indestructible space bugs in a DS9 book...

 

In marveling about entanglement, I was wondering why such phenomena only occurs on the microscopic scale.

(I.E.) Why aren't our keys ever in 2 places at once?

PS. Big fan of the old Star Trek.

 

My understanding is that it isn't actually possible to transmit information that way. You can know something about the other particle. But, you can't set your particle such that the other particle gives information to the locals there.

So, you can't give someone a particle entangle with a partical you have and then tell that person to go to a distant planet and set his particle to 1 if he finds little green men and to -1 if he doesn't.

https://www.forbes.com/sites/chador...faster-than-light-communication/#37dd45113a1e

... though that may not affect the majority of your post, and maybe I'm wrong, of course.

Some group in Asia claims they sent a crypto key by entangled particles - I don't know what the heck they actually did. Maybe they made a deal with a traveler that if they measured their partilce as 1 it meant one code and if they measured it at -1 it meant another code. Then, the two parties would know which crypto to use.

???

 

You are talking about not being able to beat the speed of light limit using entangled particles for communication.

 

As per the Copenhagen interpretation of QM, QM effects are not seen at large scale because we observe the system. ie, Schrodinger's cat is both dead and alive until we open the box and make an observation.

 

Well, entanglement works without respect to distance.

So, any possible communication of information by means of entanglement does happen to be faster than light speed.

True??

 

As Mr. Spock would say: "Fascinating"

 

Information, but not useful information. You can't force the collapse of the system to spin up or spin down on either end. It is random.

ie, I can send you an entangled particle, but I have no control over the state of the particle. I don't know if I am sending a 0 or a 1. In fact, it isn't a 0 or 1 until it is measured for spin. It is Schrodingers cat still in the box.

If I measure mine before I send it, the entanglement is lost.