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Chinese Physicists Teleport Photons Over 100 Kilometers
Popular Science ^ | May 11, 2012 | Dan Nosowitz

Posted on 05/12/2012 7:52:50 PM PDT by Innovative

Teleportation, sci-fi-y as it sounds, is actually not fictional or even new; two years ago, Chinese physicists broke the then-current record for quantum teleportation by teleporting photons over 10 miles. But a new effort from that same team demolishes that record, beaming the photons over 97 kilometers.

The physicists, working from the University of Science and Technology of China in Shanghai, have again taken advantage of quantum entanglement for the purposes of moving an object from one place to another without ever moving in the space between. According to Technology Review, "The idea is not that the physical object is teleported but the information that describes it. This can then be applied to a similar object in a new location which effectively takes on the new identity."

The task uses a 1.3-watt laser "and some fancy optics" to beam those photons and retrieve them at the final location. The trick seems to be maintaining the photons' information, since the beam widens over space, but eventually teleportation of this sort could be used to beam information incredibly quickly up to satellites.

(Excerpt) Read more at popsci.com ...


TOPICS: Extended News; News/Current Events
KEYWORDS: physics; science; scifi; stringtheory; teleportation
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For those interested in such things...

More in Technolgy REview: Chinese Physicists Smash Distance Record For Teleportation

1 posted on 05/12/2012 7:52:59 PM PDT by Innovative
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To: DUMBGRUNT

ping


2 posted on 05/12/2012 8:06:31 PM PDT by mountn man (Happiness is not a destination, its a way of life.)
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To: Innovative

“The idea is not that the physical object is teleported but the information that describes it. This can then be applied to a similar object in a new location which effectively takes on the new identity.”

I’m an economist not a physicist but this doesn’t sound like teleportation to me. Rather it is the transmission of information not the transmission of an object.

Will someone more enlightened inform an ignorant economist what I’m missing?


3 posted on 05/12/2012 8:21:40 PM PDT by Black_Shark
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To: Black_Shark

I take it as an advanced copy of something.


4 posted on 05/12/2012 8:26:37 PM PDT by classified
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To: Black_Shark
Will someone more enlightened inform an ignorant economist what I’m missing?

I could inform you, but I would have to charge you...

5 posted on 05/12/2012 8:33:55 PM PDT by FDNYRHEROES (It's 3 AM. Let me sleep on it. I'll get back to you in 16 hours.)
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To: Black_Shark

I believe you’re correct. Quantum entanglement allows 2 entangled particles to have the same “information” regardless of how far apart the objects are. I have no clue how or why it works, and am not sure anyone else does either - but it’s not teleportation in the Star Trek sense.


6 posted on 05/12/2012 8:34:58 PM PDT by TheZMan (Obama is without a doubt the worst President ever elected to these United States)
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To: Black_Shark

go to the Technology Review link I posted in my post 1, they have more explanation.

But basically something is in one place, then the same/or at least identical something appears at a different location, without it having actually having moved there by moving through the space between the two location.

Hi, I am here at point A.

Next I am calling for you from point B, without actually being observed on route from A to B.


7 posted on 05/12/2012 8:44:21 PM PDT by Innovative (None are so blind that will not see.)
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To: Innovative
"The idea is not that the physical object is teleported but the information that describes it. This can then be applied to a similar object in a new location which effectively takes on the new identity."

There is no spoon...

8 posted on 05/12/2012 8:45:20 PM PDT by Windflier (To anger a conservative, tell him a lie. To anger a liberal, tell him the truth.)
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To: Innovative

Don’t many photons look alike?


9 posted on 05/12/2012 8:49:12 PM PDT by Hillarys Gate Cult (Liberals make unrealistic demands on reality and reality doesn't oblige them.)
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To: Black_Shark
Will someone more enlightened inform an ignorant economist what I’m missing?

Famously referred to as "spooky action at a distance."

10 posted on 05/12/2012 8:53:46 PM PDT by LoneRangerMassachusetts (The meek shall not inherit the Earth)
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To: Black_Shark
Rather it is the transmission of information not the transmission of an object.

Just think of it like Internet Porn.

11 posted on 05/12/2012 9:26:03 PM PDT by UCANSEE2 (Lame and ill-informed post)
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To: Innovative

This is not good. Not good at all. This might give the ChiComms unbreakable communications encryption. Hopefully NSA is already past this point and working on ways to disrupt this kind of communications encryption. The ChiComms are known for selling their MILTech to rogue nations, terrorists and Narco-smugglers, so this could be a game-changer on many fronts if they figure out how to field this.


12 posted on 05/12/2012 9:36:34 PM PDT by anymouse (God didn't write this sitcom we call life, he's just the critic.)
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To: Hillarys Gate Cult
Don’t many photons look alike?

What... are you racist?

(: o )

Maybe photons are neither particle nor wave, but the pattern produced by the intersection of waves.


13 posted on 05/12/2012 9:40:21 PM PDT by UCANSEE2 (Lame and ill-informed post)
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To: Innovative
Next I am calling for you from point B, without actually being observed on route from A to B.

I'm not sure but doesn't that imply the transit time from 'A' is 'B' zero? That would be very hard to measure since our instruments are bound by light speed, in any event it would allow the transfer of information at intergalactic distance faster then light speed, yes?

SETI calling on line 2...

Regards,
GtG

14 posted on 05/12/2012 9:41:01 PM PDT by Gandalf_The_Gray (I live in my own little world, I like it 'cuz they know me here.)
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To: Innovative

Are you Speedy Gonzales? Andelay! Andelay!

Roadrunner?

My stomach when I got dysentary in the jungles of Guatemala?


15 posted on 05/12/2012 10:03:01 PM PDT by MadMax, the Grinning Reaper
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To: mountn man

Oh, well, of course “photons”. Wake me up when they start teleporting neutrons! (or Volkswagon Beetles)


16 posted on 05/12/2012 11:05:44 PM PDT by The Duke
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To: Black_Shark
The statement is completely wrong. No information in the sense understood by laymen is transmitted at superluminal velocity by quantum teleportation; if that were possible causality could be violated.

There is a sleight of hand involved here. What is done is that the state vector (colloquially, and less correctly, called a "wave function" by some) of a photon at distance is entangled with the state vector of a nearby photon. By manipulating the state of the near photon, a change in the state of the remote photon occurs. Because photons (actually all quantum particles) are indistinguishable, the state change reflected in the remote photon is identical to the appearance of a "new" photon with the same state.

However, since an observer at distance cannot know the state of our "nearby" photon (which is remote from his point of view) without exchanging state descriptions with us, there is actually no information being transmitted until an ordinary radio transmission (or pony express rider, or some other conventional information process) actually verifies the content. Roughly, the particles "know" they have been changed ("spooky action at a distance," in Einstein's words) but this knowledge cannot do anyone any good until ordinary messages can be exchanged.

This is the position of orthodox physics. It is not controversial, although there are a few (actually respected) dissenters who claim information can be exchanged in this way. But they have never constructed an experiment that shows how.

This article http://en.wikipedia.org/wiki/Quantum_teleportation does not completely suck, even though it is from Wikipedia. If you are very interested, also have a look at the Einstein-Podolsky-Rosen Paradox which is the original paper that got people thinking about the question of quantum entanglement. Both of these articles are accessible to an intelligent layman. The article on the EPR paradox is the better of the two. Interestingly, Einstein, Podolsky, and Rosen believed their "paradox" would overthrow Quantum Mechanics.

They were mistaken; it is not a paradox. It is the way the universe actually behaves.

If you want to follow this rabbit quite far down the hole, the issue was resolved (to the current state of our knowledge) by Bell's Theorem. Have a look there if you are an economist with a decent mathematical background and some time.

17 posted on 05/12/2012 11:26:16 PM PDT by FredZarguna (2.9979 times ten to the eight meters per second: not just a good idea, it's The Law.)
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To: Black_Shark
I'm just an old ex-cotton chopper/picker with an eitght grade educakion.

But I have often thought the simplest way (ha, that's an oxymoron) to do such was gather all the information down to the subatomic structure of an object, transmit it and reconstruct a clone of the object elsewhere. IE: a clone

18 posted on 05/12/2012 11:33:53 PM PDT by Sea Parrot (I'll be a nice to you as you'll let me be, or as mean as you make me be.)
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To: TheZMan
I believe you’re correct. Quantum entanglement allows 2 entangled particles to have the same “information” regardless of how far apart the objects are. I have no clue how or why it works, and am not sure anyone else does either - but it’s not teleportation in the Star Trek sense.

They do not have the same information. They have complementary information.

It is well understood, and has been since 1937. No physics graduate student can pass a doctoral candidacy or comprehensive exam without being able to explain it.

It is teleportation in the Star Trek sense, as explained by James Blish in the novel Spock Must Die in 1970. [Blish wrote a number of Star Trek episodes and adapted the teleplays into anthologies in at least two books.] His very nice description of how the teleporter works, and how it involves the material destruction of an individual in the transporter room accompanied by his material reconstruction at distance is both quantum mechanically correct (at the level explained) and metaphysically interesting.

19 posted on 05/12/2012 11:36:04 PM PDT by FredZarguna (2.9979 times ten to the eight meters per second: not just a good idea, it's The Law.)
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To: Innovative
"The Propaganda Department of the Central Committee ..."

I believe NOTHING that comes out of China.

20 posted on 05/12/2012 11:36:04 PM PDT by HeartlandOfAmerica ("We have prepared for the unbeliever, whips and chains and blazing fires!" Koran Sura 76:4)
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