Terabit Internet Possible Using Twisted Light?

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Just great, after reading this article, Chubby Checker singing "The Twist" in stuck in my head. Thanks to AliceCooper for the link.

The wireless and fibre-optic links that make up the internet use electromagnetic waves to carry data as a series of pulses at a specific frequency. It is possible to increase the amount of data transmitted at a given frequency by twisting light beams in different ways. Each beam has a different angular momentum and acts as an independent channel in a larger, composite, beam.
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Nice solution until we can get Quantum Entangled information coded via tradition means so we can send data and receive it. That will be the ultimate data transfer medium.
 
Godmachine said:
Nice solution until we can get Quantum Entangled information coded via tradition means so we can send data and receive it. That will be the ultimate data transfer medium.
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Yeah, I have read from other articles that this twisting method could potenitally allow them to twist an infinite amount of signals together. But until then, this is a really good solution.
 
AliceCooper said:
Yeah, I have read from other articles that this twisting method could potenitally allow them to twist an infinite amount of signals together. But until then, this is a really good solution.
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I just realized that was worded very badly. I meant until we are able to use quantum entanglement, this twisting is a very good solution. And from the way it sounds, I don't believe it needs line of sight.
 
So is this using visible light? I originally thought they were talking about having beams of light inside of beams of light until they compared it to Wifi instead of fibre optics. And if it uses light but no cable, then how can it not require line of sight?
 
BoogerBomb said:
So is this using visible light? I originally thought they were talking about having beams of light inside of beams of light until they compared it to Wifi instead of fibre optics. And if it uses light but no cable, then how can it not require line of sight?
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After further digging, I found that it is unidirectional as far as I have found. But I have yet to find anything on whether or not it needs line of sight.
 
AliceCooper said:
I just realized that was worded very badly. I meant until we are able to use quantum entanglement, this twisting is a very good solution. And from the way it sounds, I don't believe it needs line of sight.
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Unless the said wavelenghts of light can travel through physical objects (xray?), it seems like it would have to have line of sight. But it also makes sense that it might work in a fiber optic cable as well. In any case, definitely something I will be keeping my eye on in the future! Instaporn! :D haha
 
If you have competition in your town you might see this at some point in the next 20 years, otherwise good luck. :rolleyes:
 
ZenDragon said:
Unless the said wavelenghts of light can travel through physical objects (xray?), it seems like it would have to have line of sight. But it also makes sense that it might work in a fiber optic cable as well. In any case, definitely something I will be keeping my eye on in the future! Instaporn! :D haha
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I am getting information from other articles also so the article that I origionally read was talking about radio signals, not light.
 
Soon you'll be able to reach your monthly bandwidth cap in less than a second.
 
This only works in free space (i.e. closed vacuum). Good proof of concept, but unless they plan on making a satellite to launch public worldwide wifi lol this is not going to help us down here on earth. You can't twist light with gravity as the intended purposes you speak of
 
blandead said:
This only works in free space (i.e. closed vacuum). Good proof of concept, but unless they plan on making a satellite to launch public worldwide wifi lol this is not going to help us down here on earth. You can't twist light with gravity as the intended purposes you speak of
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Just remember that when your download fails, nobody can hear you scream in space! :D

New version of the "twisted pair"? ;)
 
blandead said:
This only works in free space (i.e. closed vacuum). Good proof of concept, but unless they plan on making a satellite to launch public worldwide wifi lol this is not going to help us down here on earth. You can't twist light with gravity as the intended purposes you speak of
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The GPS people would put a stop to that.
 
So we'll be able to hit our data caps in a few milliseconds?

Someone had to say it.
 
I read the original blurb and said "so, someone has decided to plex data in fiber based on polarization. Sounds reasonable enough, but I wonder how many channels you can get at one wavelength, and how far can you send it before curves in the fiber smear the polarized signal into the next band?"

Then I read the comments and it was like "What is this, that sounds quite different." So, I read the article, and realized the engineers gave up on fiber (I guess the signal smears too much to quickly and just went straight to direct beam)

If that's true, this is more "Well, duh" than something new and exciting.
 
This is interesting, but I don't download that much to justify the speed. I can already stream movies in 1080p without lag, for example. Why would anyone need a faster connection?
 
juicedown said:
This is interesting, but I don't download that much to justify the speed. I can already stream movies in 1080p without lag, for example. Why would anyone need a faster connection?
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Because data is getting larger. 56k was fine in the world of floppy drives. Cable was fine in the world of CDs and DVDs. We rapidly merging into a world of terabyte data storage and network and internet needs to keep up. Not just network and internet but also drive to drive transfer.

For a one-day old user, you're sure posting on every forum post in a relatively short time. Looking for HotDeal privileges?
 
AliceCooper said:
I am getting information from other articles also so the article that I origionally read was talking about radio signals, not light.
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Light is just another form of electromagnetic radiation, just like radio, microwave, ect...

Many of the same things you can do to modulate radio signals, you can also do to modulate light.
 
SCSI-Terminator said:
Light is just another form of electromagnetic radiation, just like radio, microwave, ect...

Many of the same things you can do to modulate radio signals, you can also do to modulate light.
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Yeah I understand this, one article I read was about radio waves the other about light waves so I got a little confused :confused:.
 
Godmachine said:
Nice solution until we can get Quantum Entangled information coded via tradition means so we can send data and receive it. That will be the ultimate data transfer medium.
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quantum entanglement does not transmit information
 
juicedown said:
This is interesting, but I don't download that much to justify the speed. I can already stream movies in 1080p without lag, for example. Why would anyone need a faster connection?
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you can steam compressed to hell 1080p from netflix. You'd need at least a 40mbit connection for even bluray quality 1080p. Now, that's just 1080p. Let's take 8k, 120fps for 3D, and a larger 12bit+ color space, you're talking 3.5gbits at least to stream that at a similar compression as bluray.

Also, this might be able to be used as an optical bus in a computer. Sure has copper beat.
 
juicedown said:
This is interesting, but I don't download that much to justify the speed. I can already stream movies in 1080p without lag, for example. Why would anyone need a faster connection?
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Assuming the quality(and therefore size) of content remains exactly the same as it is now for the rest of time, nobody really would. The question is; How long will it be before your internet connection can't do what you want it to do anymore? I mean when I first got cable internet and I could download at 60KB/s I thought that was pretty damn fast. Now when I download at 60KB/s I'm like "What the hell is wrong with my connection? Why is this so slow?"
 
Ryan711 said:
quantum entanglement does not transmit information
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You need a little "learning" it seems :

http://en.wikipedia.org/wiki/Quantum_entanglement


When a measurement is made and it causes one member of such a pair to take on a definite value (e.g., clockwise spin), the other member of this entangled pair will at any subsequent time be found to have taken the appropriately correlated value (e.g., counterclockwise spin). Thus, there is a correlation between the results of measurements performed on entangled pairs, and this correlation is observed even though the entangled pair may have been separated by arbitrarily large distances.
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The act of measurement is a reception of data , if data can be encoded , traditionally such as a 1 or 0 during each recording of the pairing value (which in this case would be spin) then you could in theory do this and transmit information across infinite distances in real time.

We've already achieved Quantum data transmission and this :

http://phys.org/news/2011-01-billion-bits-entanglement-silicon.html

The researchers used high magnetic fields and low temperatures to produce entanglement between the electron and the nucleus of an atom of phosphorous embedded in a highly purified silicon crystal. The electron and the nucleus behave as a tiny magnet, or 'spin', each of which can represent a bit of quantum information. Suitably controlled, these spins can interact with each other to be coaxed into an entangled state – the most basic state that cannot be mimicked by a conventional computer.
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Only a matter of time now.
 
Godmachine said:
You need a little "learning" it seems :

http://en.wikipedia.org/wiki/Quantum_entanglement




The act of measurement is a reception of data , if data can be encoded , traditionally such as a 1 or 0 during each recording of the pairing value (which in this case would be spin) then you could in theory do this and transmit information across infinite distances in real time.

We've already achieved Quantum data transmission and this :

http://phys.org/news/2011-01-billion-bits-entanglement-silicon.html



Only a matter of time now.
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You're still wrong, and he was correct.

Quantum entanglement does not "transmit" anything.

By measuring the state of entangled particle A, you can immediately know the state of anti-correlated entangled particle B.

There's no "transmission"... there is a reading and "knowing" of information simultaneously... but the speed limit of the anti-correlated particles is still c, just like any other particle.

Only the information is "known" across the distance. But it still took t=d/c to arrive to its destination.
 
Zangmonkey said:
You're still wrong, and he was correct.

Quantum entanglement does not "transmit" anything.

By measuring the state of entangled particle A, you can immediately know the state of anti-correlated entangled particle B.

There's no "transmission"... there is a reading and "knowing" of information simultaneously... but the speed limit of the anti-correlated particles is still c, just like any other particle.

Only the information is "known" across the distance. But it still took t=d/c to arrive to its destination.
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Again the idea is that somehow we will be able to IN THE FUTURE encode data in some form through entanglement. Its not possible right now but it is being worked on. So yes he is correct ..RIGHT NOW but I do believe we will find a way to encode traditional information via Quantum Entanglement down the road.
 
Godmachine said:
Again the idea is that somehow we will be able to IN THE FUTURE encode data in some form through entanglement. Its not possible right now but it is being worked on. So yes he is correct ..RIGHT NOW but I do believe we will find a way to encode traditional information via Quantum Entanglement down the road.
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Quantum entanglement does not permit transmission of information at rates above c.

Information still travels from the publisher to the subscribers at c, it's just that each subscriber "knows" the state of the other subscriber "instantly".
 
Zangmonkey said:
Quantum entanglement does not permit transmission of information at rates above c.

Information still travels from the publisher to the subscribers at c, it's just that each subscriber "knows" the state of the other subscriber "instantly".
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Each spin is inferred to the entangled particle involved in the reaction correct? The idea would be to figure out how to encode that using traditional means outside of the reaction. It wouldn't be to fundamentally change the actual particle and its superposition state but to figure out how data could be inferred from the event reaction. As it stands right now the best Quantum computer in the world can only add 5+3 but it can do so with 1 qubit which is impressive none the less but the promise is that somehow down the line our understand of the "spooky" interaction won't be so minor.
 
Godmachine said:
Each spin is inferred to the entangled particle involved in the reaction correct? The idea would be to figure out how to encode that using traditional means outside of the reaction. It wouldn't be to fundamentally change the actual particle and its superposition state but to figure out how data could be inferred from the event reaction. As it stands right now the best Quantum computer in the world can only add 5+3 but it can do so with 1 qubit which is impressive none the less but the promise is that somehow down the line our understand of the "spooky" interaction won't be so minor.
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Two anti-correlated particles are ejected from the same source.
Their quantum states are not defined (until measured) but we know that they are anti-correlated... (easiest to think of this in term of spin: one up, one down).

Assuming those two anti-correlated particles are ejected in opposite directions, they still travel at a maximum speed of c.

So, t time later, they are 2tc apart.
If you then make a measurement on one particle, you define its quantum state (let's say it's spin up)
The entangled, anti-correlated, particle must have the opposite state (spin down).

Therefore, you now have knowledge of the state of the anti-correlated particle instantly (regardless of the distance: 2tc)... but the information (that is, the entangled state(s)) has still be transmitted at c from its point of origin... it just so happens that the information wasn't defined at that time.

This is a fuzzy concept, I know.
For good explorations on it, read up on the work of David Bohm.
 
Coming soon to ... NO WHERE! Companies are putting caps on shit, cutting costs, delaying fiber deployments, etc.. Maybe Japan will use this as part of their backbone, but in the US? Nope. Cheap bastards. Just give me 100Mb ethernet or fiber and I'll be good for a LONG time. At least a couple years. :D
 
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