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Glaswegian scientists snap entangled particles --- Next: the Schrödinger's LOL-cat blog?
The Register ^ | 10th August 2012 00:15 GMT | Richard Chirgwin

Posted on 08/10/2012 10:09:26 AM PDT by Ernest_at_the_Beach

A group of physicists at the University of Glasgow is claiming a first: taking photos of entangled photons.

In this paper in Nature (hooray for free access!), they explain that their 201 x 201 pixel images captured around 2,500 different entangled quantum states.

The entangled photons were imaged using different lens configurations to capture correlations of position and momentum – the characteristics (to shorthand Heisenberg’s uncertainty principle) that mutually preclude excessive knowledge about a given quantum system.

From the 100,000 images taken by their setup (pictured*), the scientists say they were able to observe 2,500 states which they described as “Einstein–Podolsky–Rosen type correlations”. The “EPR” paradox is the key classical criticism against quantum entanglement, since the “state” information in entangled quanta propagates faster than the speed of light.

The Glasgow quantum-entanglement telescope-camera setup (see text)

Source: Nature

In other words, the Glasgow team, comprising Matthew Edgar, Daniel Tasca and Professor Miles Padgett, spotted instant correlations in their separated-but-entangled photons.

As the university’s release puts it, “by taking pictures of pairs of photons the researchers measured correlations in the photons’ positions to a degree that is not allowed according to classical physics.”

The researchers say that photographing quantum correlations will make useful contributions to developing quantum computers.

*The camera setup used lenses with 100mm and 200mm focal lengths - (a) in the picture - to measure position correlation, and added a 50mm focal length lens (b) for momentum correlations. ®


TOPICS: Computers/Internet; Science
KEYWORDS: quantumcomputing; quantumphysics; stringtheory

1 posted on 08/10/2012 10:09:33 AM PDT by Ernest_at_the_Beach
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To: SunkenCiv; ShadowAce

Hmmm,...watching small stuff.


2 posted on 08/10/2012 10:11:26 AM PDT by Ernest_at_the_Beach (The Global Warming Hoax was a Criminal Act....where is Al Gore?)
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To: Ernest_at_the_Beach

I can and can’t has cheezburger?


3 posted on 08/10/2012 10:15:40 AM PDT by Yashcheritsiy (Science puts you on the moon, atheism puts you in the gulag)
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To: Ernest_at_the_Beach

So where are the pictures?


4 posted on 08/10/2012 10:16:16 AM PDT by Lurker (Violence is rarely the answer. But when it is it is the only answer.)
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To: Ernest_at_the_Beach

This should be repeatable. Unlike much of ‘climate’ science, repeatable.


5 posted on 08/10/2012 10:16:16 AM PDT by RinaseaofDs (Does beheading qualify as 'breaking my back', in the Jeffersonian sense of the expression?)
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To: Lurker

6 posted on 08/10/2012 10:26:56 AM PDT by shibumi (Cover it with gas and set it on fire.)
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To: RinaseaofDs

I’m still not fully buying the entangled particles idea.


7 posted on 08/10/2012 10:38:25 AM PDT by Clock King
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To: shibumi

Thanks....lol!


8 posted on 08/10/2012 10:47:16 AM PDT by Ernest_at_the_Beach (The Global Warming Hoax was a Criminal Act....where is Al Gore?)
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To: Lurker
Link in the second paragraph:

http://www.nature.com/ncomms/journal/v3/n8/full/ncomms1988.html

Then scroll down a bit.

9 posted on 08/10/2012 10:50:34 AM PDT by Ernest_at_the_Beach (The Global Warming Hoax was a Criminal Act....where is Al Gore?)
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To: shibumi

10 posted on 08/10/2012 10:54:40 AM PDT by Ernest_at_the_Beach (The Global Warming Hoax was a Criminal Act....where is Al Gore?)
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To: Ernest_at_the_Beach

Bflr


11 posted on 08/10/2012 11:04:25 AM PDT by colinhester
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To: Ernest_at_the_Beach

And several butcher’s aprons.


12 posted on 08/10/2012 11:32:22 AM PDT by shibumi (Cover it with gas and set it on fire.)
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To: Ernest_at_the_Beach
“by taking pictures of pairs of photons the researchers measured correlations in the photons’ positions to a degree that is not allowed according to classical physics.”

I love it when that happens.
Though not too related, somewhere Halton Arp laughs at the “that is not allowed according to classical physics” part.

13 posted on 08/10/2012 11:52:40 AM PDT by The Cajun (Sarah Palin, Mark Levin......Nuff said.)
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To: Clock King

Neither did Einstein, but there was an experiment done that basically proved it was happening, two actually.

Einstein, of all people, had a stake in not believing it, given a part of it violates ‘the speed limit’, which is c.

Spooky action at a distance.


14 posted on 08/10/2012 1:17:20 PM PDT by RinaseaofDs (Does beheading qualify as 'breaking my back', in the Jeffersonian sense of the expression?)
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To: Ernest_at_the_Beach

Huh?

What kind of light do you shine on a photon to take a picture of it?


15 posted on 08/10/2012 1:20:48 PM PDT by djf (The barbarian hordes will ALWAYS outnumber the clean-shaven. And they vote.)
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To: djf

Guess it is some kind of special light,.....LOL!


16 posted on 08/10/2012 2:54:11 PM PDT by Ernest_at_the_Beach
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To: Ernest_at_the_Beach; AdmSmith; bvw; callisto; ckilmer; dandelion; ganeshpuri89; gobucks; ...
Thanks Ernest.

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17 posted on 08/10/2012 3:27:51 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: Ernest_at_the_Beach

Very interesting. Thanks for posting.


18 posted on 08/10/2012 3:40:14 PM PDT by onedoug
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To: SunkenCiv

IF time travel ever happens at different from daily rate (we time travel every day into the next day), then the where when of each day must be quantumly entangled to every other day, past or future. Think about it ... this moment is happening at a location different from the location of the following moments or previous moemnts, so for coherency each must be connected to those past and future.


19 posted on 08/10/2012 8:11:11 PM PDT by MHGinTN (Being deceived can be cured.)
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To: SunkenCiv

IF time travel ever happens at different from daily rate (we time travel every day into the next day), then the where when of each day must be quantumly entangled to every other day, past or future. Think about it ... this moment is happening at a location different from the location of the following moments or previous moments, so for coherency each must be connected to those past and future.


20 posted on 08/10/2012 8:11:26 PM PDT by MHGinTN (Being deceived can be cured.)
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To: MHGinTN; SunkenCiv
IF time travel ever happens at different from daily rate (we time travel every day into the next day), then the where when of each day must be quantumly entangled to every other day, past or future. Think about it ... this moment is happening at a location different from the location of the following moments or previous moments, so for coherency each must be connected to those past and future.

Like in the movie Primer?

21 posted on 08/10/2012 8:13:38 PM PDT by thecodont
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To: thecodont
I have no idea since I'm completely unfamiliar with this movie, Primers.

I take my cues from what I find in the Bible and how scenes from the Bible inform regarding concepts in modern Physics and Cosmology.

If you will, the where when of 1865 events is not only 'back', temporally, it is spatially in a very distant place, when you consider the motions out galaxy cluster, out galaxy, our solar system, out planet, and the background of the entire universe are compared moment by moment and location by location. Our motion is a revolving planet, an orbiting planet, a star orbiting in a rather remote arm of a galaxy which is moving with a cluster of galaxies, in some direction. Each of these motions have a different rate of location change, and due to gravitational fields effecting temporal reality, have different temporal shift rates.

22 posted on 08/10/2012 10:06:07 PM PDT by MHGinTN (Being deceived can be cured.)
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To: MHGinTN
If you will, the where when of 1865 events is not only 'back', temporally, it is spatially in a very distant place

Right. The coordinates ARE different.

An interesting (not scientifically rigorous, but interesting) take on this concept is Stephen King's novella, The Langoliers. In this story he explores the idea of "the past" being an actual PLACE.

23 posted on 08/10/2012 10:20:56 PM PDT by thecodont
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To: thecodont

A curious notion in that story, that the past is being consumed and that the past is not inhabited. The folks on the plane did not see humans until they made it back to the present.


24 posted on 08/11/2012 7:42:08 AM PDT by MHGinTN (Being deceived can be cured.)
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