Scientists Reproduce Quantum Entanglement, Einstein's “Spooky Action”

It is an interesting question though as to why we don't see quantum mechanics in everyday life. And imagine if in a few years (or centuries) we could use quantum mechanics. Data transfer at the speed of... well, instantaneous lol.

One of the more important applications of quantum entanglement would be its use as a potential for long distance communication. If you can affect one particle and have that effect be instantaneously apparent on the other, regardless of distance, it would alleviate many of the problems in communication with spacecraft that have left the reliable distance for radio communication. Imagine a probe that can be controlled at a distance of several light years, with instantaneous precision.

I wonder, how instantaneous is it? If the two entangled ion's were say, a light year apart (And still entangled) would it be possible to send information via oscillations in the two ions? And would the oscillations happen instantaneously enough to permit real time communication at those distances? Would you be able to create a closed circuit of those ions in a loop and defy space/time to talk a year into the past?

Well... the theory is that two entangled particles affect one another instantaneously, regardless of distance. That is, the time between an action performed on one particle and its effect being measured on the other is zero. I can't for the life of me imagine how you could jump to the conclusion that that would allow you to communicate into the past. Instantaneous is instantaneous... you can't pass information through time when the total time involved is zero.

The next followup experiment would be to separate one of the ions from the pair while still maintaining the entanglement and injecting into one of the particle accelerators and making it go around close to the speed of light. If that happens then the traveling particle will experience time dilatation compared to the stationary particle according to Einstein i.e. it will go backwards in time. If it is successfully extracted from the particle accelerator, we will have two particles which communicate instantaneously across different times periods. We can send messages back in time by sending them through the stationary particle or ask questions to people in future by sending questions through the traveling particle.

GraVix: We already use quantum mechanics. CD/DVD readers depend on the laws of quantum mechanics just to name an example.

Dudley22: You are incorrect. Entanglement does not operate "instantaneously, regardless of distance" - it operates at the speed of light (both entanglement and gravity are limited to the speed of light). Otherwise it would violate the laws of cause and effect. So if you separated the particles by several light years, it would take several years for the entangled particle to change its' twin state. Anything that goes faster than the speed of light means the the consequence of an action could occur before the action - if it was not limited to the speed of light then Pay the Piper would be correct, you on the other hand would be wrong - at any rate that is why it is limited to the speed of light.

"Anything that goes faster than the speed of light means the the consequence of an action could occur before the action"

Granted, I'm no expert in quantum physics, but this statement seems to break the laws of cause and effect more than the one you're using it as a counter-argument against. If it were possible to launch an object at twice the speed of light, and send it to a location two light years in the distance, common sense would dictate that the object will arrive at its destination in one year. One year later does not mean the consequences are occurring before the action... they are occurring one year later.

Now, the observable effect from the point of the destination would *appear* to happen in reverse, since from that perspective visible light from the object's arrival would reach the destination sooner than visible light from an earlier point in its travel. but that would be an observable effect, and not the actual events. Granted, if light is indeed the barrier for velocity, this example could never occur to begin with...

Either way, in a quantum entanglement example, it seems to me like this would be a moot point; even if the effect is instantaneous over a large distance, there are no particles, be they mater or energy, traveling faster than the speed of light. All particles involved stay in relatively fixed locations.

These are just my thoughts as best as I understand the theory. I think one of the two of us is confused about something, so I'd appreciate it if you could clarify your stance, maybe with source information... interesting discussion, though.

Hmm... I've reread your post a few times, and I think I see the point you were trying to make. Under the theory of general relativity, as an object approaches the speed of light, time slows for that object, and eventually comes to a stop at the speed of light itself. I suppose one could extend the theory to the assumption that, if you were able to push beyond the speed of light, time would "slow" even further for that object, and the object would then be experiencing time in reverse.

However, if this is what you meant when you said an action that occurs beyond the speed of light will have its consequences occur before the action, I think you may be misapplying the theory. Once again, in a quantum entanglement example, there are no particles traveling beyond the speed of light, and so both of the entangled particles are experiencing time in a normal, forward direction.

What is instantaneous? Instantaneous relative to what? If your definition of simultaneity is dependent on you movement through space (which it is) then what does instantaneous mean?

Also to 3DTOPO, Quantum physics does propose the ability to transfer information through space faster than the speed of light because it allows a single particle to occupy multiple spaces at once. Thats why Einstein hated it because he set the speed limit at C, but quantum physics broke that rule.

If it were an instantaneous closed loop, or circuit, with each end of the loop covering a distance of one light year, wouldn't the message itself experience time dilation? Wouldn't the message when traversing this loop, travel into the past according to Einstein's theory of relativity? And therefore violate causality? From what I understand time and space are more or less one and the same.

What you have to remember is that a message is really just information in its purest form. It's not traveling anywhere; it has no velocity, no mass, and no energy. Essentially, as far as the laws of physics are concerned, information doesn't even exist. So, even if you "send" a message faster than the speed of light via superposition or quantum entanglement, no laws are broken. All you really have is a particle in one location reacting to a particle in another; there is no "traveling" involved.

qlmmb2086: First of all, spin states are considered to be information, so if entanglement operated at greater than the speed of light, then you could in fact send information faster than the speed of light.

Look up "Quantum entanglement" at Wikipedia for more information, a quote:

"Even if information cannot be transmitted through entanglement alone, it is believed that it is possible to transmit information using a set of entangled states used in conjunction with a classical information channel. This process is known as quantum teleportation. Despite its name, quantum teleportation may still not permit information to be transmitted faster than light, because a classical information channel is required to complete the process."

Basically, you would still need something like light for the information channel.

You also might want to read up on "retrocausality" and "causality".

There now is a quantum computing company. D-Wave Systems is in production stage of the first ever quantum computing algorithms.

www.dwavesys.com

Enjoy the future...It's here.

Arise_into_god_glory@gmail

This scientifc mystery is what is called the spiritual realm or 4th dimension. Everything is created in that dimension before it evolves to this 3rd dimension of tangibility. The Lord lead me to look up Quantum Physics and wow, it explained alot to me on how faith works and how He uses the unseen realm(the spookie action as its called) before things becomes come seen. Materail objectslive and are created in this realm, spirits, good and bad, thoughts words take action there and more stuff. Its like a birthing canal dimension. I tell you we forget its God the creator of all who knows the info first but man mind is very great and intellectual cause He made us in the image of him(not apes).

Genesis 11:6
And the LORD said,.... and this is only the beginning of what they will do. now nothing they have imagined they can do wont be impossible for them.

1 Corinthians 2:7 (NKJV)
7 But we speak the wisdom of God

As I understand quantum entaglement is two particles thet have been linked so that if you change something in one of them then the other will change in the same way. So if you made a quantum computer out of entagled particles and made another one of the particles the first computer is linked to would you have instantaneous communication?

@ Pay The Piper:

Yes, theoretically the information transfer would be instantaneous no matter how far apart you are. The only problem is to communicate instantaneously light years away, you still have the travel time of setting up the receiving point that is light years away, unless we master faster than light speed travel.

As far as time machine communication goes, there's work already being down on one. ( you can look it up on youtube - i think by searching for first time machine discovery) Although, the catch is you can only communicate back to the day where the first time machine was actually turned on, and not beforehand.