Scientists in China have broken the record for quantum teleportation, achieving a distance of about 10 miles, according to a new study in Nature Photonics. That's a giant leap from previous achievements.
The feat brings us closer to communicating information without needing a traditional signal transmission, the researchers note.
Although it's called teleportation, no matter is really moved. Rather, the quantum state of one object is transferred to another object.
It works by entangling two objects, like photons or ions. The first teleportation experiments involved beams of light. Once the objects are entangled, they're connected by an invisible wave, like a thread or umbilical cord. That means when something is done to one object, it immediately happens to the other object, too. Einstein called this "spooky action at a distance."
Until now, this has only been achieved with particles that are at most a couple hundred feet apart. And those distances have been accomplished with fiber channels, which help preserve the photons' state.
In the latest experiment, researchers entangled two photons and zapped the higher-energy one through a special 10-mile-long free-space tunnel, instead of a fiber one. The distant photon was still able to respond to the changes in state of the photon left behind, an unprecedented achievement.
It worked because the team "maximally entangled" the photons, using spatial and polarization modes, according to Ars Technica. About 89 percent of the information was maintained, also an improvement over previous experiments.
The work was done at the Hefei National Laboratory for Physical Sciences at Microscale and the Department of Modern Physics, University of Science and Technology of China, Hefei.
Though a 10-mile teleportation is impressive, there's still a long way to go before information can safely be sent this way. Photons are good at transmitting information, but ions are better at allowing manipulation, which would be necessary for encryption, Ars Technica notes.
They need to develop a Quantum Radio to make remote control of distant objects like satellites/probes or the Mars Rovers instant. :)
these ads are really pissing me off... this is a science blog...
anyway, it'd probably be rather difficult to measure over such (relatively) small distances, but I'd be interested in knowing how much faster this is than the speed of light. To my understanding, quantum entanglement is actually faster than the speed of light, and the only figure I heard was "10 million times faster". I'd like to verify that, because if it could somehow be used for communication (to my knowledge this is currently impossible, something about destroying the photon or altering the spin, I forget, through the act of observing it) this could be used to communicate with colonies on the other side of the galactic disc within a week, and almost real time communication with alpha centauri and other nearby systems (13-30 seconds, close enough) sorry for the rambling but if anyone could clarify I'd be grateful.
so if scientists really work on this sending messages like in star wars could become reality?!?!
Welcome to subspace communication era!
From what i understand,
Particle spooky effect has its own problems hence photons(although it is also considered particle) spooky effect is widely used or experimented with....
but with photon(lasers) the problem is the entangled beams have to be created at one place and the beams have to be separated by a distance...
Now imagine how Sub space,long distance communications have to be done...
it will not be practical to use it for extra long distances like mars etc.
cuz one part of entangled beam has to first reach the destination (ex mars) then we can start the spooky communication.
Am i right here.
this research is imperitive with future nanotech
Scenario: We make 2 gates of spooky particles.
Call them "Take-Jake" and "Make-Jake".
We send Make-Jake to Mars.
Once there, we have Jake step into Take-Jake on earth.
It rips him appart only to re-assemble him on Mars.
Now we have Star Gate Jake on Mars.
No space ship time required.
The reality of this technology was published many years ago.
Search for Colossal Storage and entangled particle communication.
If you are reading this, I am where you are, just not when you are here.
That's not quite the same as communicating with ships at sea, with nobody else able to listen. But maybe if they could build a tunnel to the ship...
"The feat brings us closer to communicating information without needing a traditional signal transmission, the researchers note."
Ugg, no, I don't think that's what they noted. You can't transfer information using quantum entanglement.
The science here isn't new, but the phrasing and terminology make for great blogging.
"..according to Ars Technica"
OMG, ta-da! Enough said. Hurray for playing catch up by reposting another blogs' horrible article. Read that article earlier, aweful and scientifically incorrect on a few points, but the comments actually got kind of interesting before they capped them off.
Ya know, I'd pay freaking good money to read an article about quantum entanglement in which the writer or editor didn't insert, like a Pavlov dog slobbering on cue, the Einstein "spooky" quote. (Note to self: Perhaps it's not a coincidence PopSci is free online.)
Perhaps I dont understand enough about quantum physics. Possibly this is the start of something bigger and better.
But to call it teleportation is a bit much dont ya think?
Personally It seems to me that logically teleportation would involve an object ceasing to be in one place and magically appearing in another place. Entangling a photon with another and sending one far away and noticing how one changes states when the other does just means they are still tied together it does not mean you teleported one of them...Even in China
There's a key word missing from the article, "instantly"...
"The distant photon was still able to respond to the changes in state of the photon left behind, an unprecedented achievement."
If it is a true case of entanglement the entagled distant photon should have changed its state _instantly_ when the first photon changed its state. This is a pretty big oversight.
I recommend that the author and science editor read more.
Linear time may chain our bodies...
but cognitive realms are boundless...
this may all be an ancient past event...
like echoes in the sea shell's ocean...
crying out the lonely sojourner of light...
his eons are more than just a chemical spectrum...
or the silly names we give them...
10-mile-long free-space tunnel! Sounds like a commie trick
Maybe, its been done before, check out http://www.barackobamavideos.net/keyword/basiago
Okay, so to make this work for communications, you would have a "factory" that entangled the particles, and then separate the entangled particles and place them into separate transceivers, like a pair of walkie-talkies. Then those "entangled" walkie-talkies would have entangled (instantaneous) communications, no matter how far apart they are.
So to have an entangled communications system, you would have to be able to entangle many (more than two) particles together, or have a base unit with one of each entangled pair of particles, while each mobile unit had the other half of the pair.
And no, it is not what should be called teleportation (that envisions starting at one spot, leaving that spot and arriving at another spot), this is more like a making a long distance copy, a Quantum Xerox Copier, so to speak.
Look at that, not even a century and we already know how to surpass Star Trek's communication technology - just imagine what we'll discover in the next 50 years!
actually i think this reminds me of mass effect which is data actually cant travel as fast, basically you could go from one point in the galaxy to another in a ship faster than data could using probes lol if you dont believe me read the books they explain it
Quantum entanglement explained. I don't know why no one thought of this before: http://waynewirs.com/hdi/ (videos at bottom).
Reminds me of a Twilight Zone ep. where a person is "split off" or "cloned" when teleported to another planet: One stays, the other has a great time on an alien world.
Instead of a tunnel with a beam of light, two tin cans with a bit of string have the same effect!
...sorry in advance. this is a long post...
Once peer reviewed this will be a milestone in science. Instantaneous communication is only the beginning.
Tin can and string? No. It is instantaneous. There is no analog in today's world. No transmission occurs as we think of it today.
BSTR1 had it right with the factory scenario: one half of the entangled pair in one transceiver, the other half in a second identical device. There is a tendency for the entangled particles to become un-entangled over time, however, so each transceiver would need several (hundreds?) of entangled particles in each device to ensure reliable operation for years/decades - the device would be smart enough to know when one particle no longer "works" as it should and will switch to the next. Other than the number of entangled particles it is just as described. There's your Star Trek communications now. That would enable such things as Star Fleet Command having a real-time video chat with Capt. Picard/Kirk. Star Fleet Command has all the "other halfs" and acts as a communications hub for all ships, bases, etc. in the galaxy.
Let's step a bit beyond that, though. A Star Gate could work if there was a "front end" device that disintegrates matter (measuring its properties as it does so) and transmits only that information to a second device somewhere else in the galaxy. Each end would need millions or even billions of entangled particles to handle the amount of data needed. In that simplistic scenario the device would be able to send you to only one destination. And yes, the second device would have to be physically transported to the location desired. The "business end" of the Star Gate would not look like a rippling pool of water, however. It would probably look like a flat wall because it works at the atomic level only. You'd need some kind of housing or stable base for it so you don't walk into it on accident (must be recognizable) and so it won't just fall over (teleporting your table or your cat in the process). Maybe it would be an obelisk like in the movie 2001. That would give a totally new meaning to the phrase walking into a wall.
To complicate things even further, multiple destinations could be accessible by first choosing a destination which causes the Star Gate to activate the proper set of entangled particles of the sending Star Gate and sends a command to the other device "over there" to tell it to activate the correct set of entangled particles at that end, then you walk through it and appear on Ceti Alpha 6 instead of on the Deep Space 9 space station. The exterior and disintegrator/re-integrator never needs to change, only the routing of information changes so there are no moving parts as we would know them. At the receiving end, the re-integrator pieces you back together using components available at that end. Remember no matter actually travels, only the information needed to recreate the matter so the receiving Star Gate actually needs a supply of atoms in order to piece you back together. To complete the obelisk picture, the "front" side disintegrates you and the "back" side re-integrates you. It may need to be a huge device to be able to store enough raw material to be useful.
Space Gate: an impossibly huge obelisk could be fashioned, large enough to move a starship instantaneously any distance at all. The design of the ships would be influenced by the size of the Space Gate if there is an upper limit for just how big a Space Gate could be (that I cannot foresee right now). Perhaps starships would need to be long and slender, like the ship in the movies 2001 and 2010. The design of the Space Gates should be nearly identical to the Star Gates, just scaled many times larger.
And if we can make a disintegrator and a re-integrator then we have what we need to have Star Trek's replicator technology -- a device that can instantly recreate items like food, drinks, tools, . Somewhere, a huge databank of previously sampled items can be selectively transmitted to your replicator which will create it for you and make it identical in every way how to the original was when it was sampled. So a recreated bowl of soup comes out just as piping hot and delicious as the original item at the time it was scanned. With instantaneous communications the databank could be located anywhere in the galaxy so there need be no limit to the amount of items you could select, nor the options. Once we increased our expertise in manipulating the data we could do such things as change the color or even the size by just flipping some bits before transmitting. But initially, whatever condition the sampled matter was in that's what you would get out of the replicator.
Whew! Now that's what I call a scientific breakthrough. Way to go, China!
Hm.. If I had a quantum-self, and, like, if I had sex with my quantum-self, that wouldn't make me gay, would it?
Not that there's nothing wrong with being gay. Some of my best friends know people who are gay. ...maybe I'd be one of them if I had sex with quantum-self?
Actually, because my quantum self would be doing exactly what I was doing, it'd be kinda' non-eventful when you think about it. It'd just be like looking in a mirror and quantum-self wouldn't be able to interact with me, really. Also, quantum-self would get annoying very quickly, being that quantum-self would be mimicking my every move and word!!! I'd want to punch him, but he'd hit me at the exact same time with precisely the same force, which would be even more annoying.
The entanglement interaction is instantaneous, but the communication is not.
This is because when the interaction occurs, there are 4 different possible outcomes, and which one occurred can only be determined at the source.
The source would then have to send 2 bits of data to the receiver in order for the receiver to interpret the quantum state of their set of particles.
The potential benefits of this technology include reducing the amount of physical bandwidth required to send large amounts of information, as for each transfer, one would need only send 2 bits physically for the receiver to interpret the quantum states.
This may help to explain it!
something extra :)
I personally would never use a transportation device that scans my atomic structure, destroys it, and then rebuilds it somewhere else. I want to stay away from the religion debate, but if (like myself) you believe that a sentient being is more than the sum of their parts, you can see my point. What comes out on the other end would be identical to me, but it would not be ME. I highly doubt that a person's "Soul" or "Consciousness" or what-have-you would be recreated in, or transferred to, even an exact duplicate.
We have to remember that we are just entering our infancy with quantum technology.
Permeating every atom of the universe is the Cosmic Microwave Background (CMB), radiation that began at the big bang and has been expanding ever since. The CMB is a key utility in cosmological studies, it shows the universe as it began and how it has evolved.
Looking at the CMB we see a permeating force that began as a singularity. I might be off the mark, but it would seem to me that every particle contained within the CMB has had intimate interactions with every single other particle, in the distant past. Who is to say that we can't tap into an entangle web that the universe went through all the trouble to set up at the beginning of time? No need to send a tangled pair to Alpha Centauri, its already there, and everywhere else in the universe, possibly even the multi-verse.
The only thing that we can say for certain is that more thorough research is needed.
As far as Star Treks replicators are concerned, that is merely a 3D printer taken to the next level. Lets use the "Tea, hot" analysis, as that seems to be all a star ship captain ever orders.
To begin with you would need to start with the real object, in this case a cup of hot tea.
Second place the desired object into a vacuum.
Next use a mass spectrometer to analysis the molecular makeup of said object.
Fourth take a 3D rendering of object, Pinging it with a quantum signature.
Lastly, approach your replicator and order, "Tea, hot." It will fire up a holographic image of the desired object. It would then use its vast database to bring up the molecular recipe that constitutes that particular object. An ionized gas consisting of all required elements would be released into the holographic field. It would then be pinged with its unique quantum signature, causing the individual ions to settle into their assigned placement. The holographic projector is then turned off, and voila! you have a cup of hot tea!
By no means are you creating something from nothing, that would violate a basic principle of physics. What you would be doing is using reserve tanks filled with various ionized gases, and simply telling a certain percentage of each element to interact in a specified manor, and make chemical bonds based on a detailed blueprint.