Skip to comments.Glaswegian scientists snap entangled particles --- Next: the Schrödinger's LOL-cat blog?
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 Heisenbergs 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 EinsteinPodolskyRosen 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)
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 universitys 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. ®
Hmmm,...watching small stuff.
I can and can’t has cheezburger?
So where are the pictures?
This should be repeatable. Unlike much of ‘climate’ science, repeatable.
I’m still not fully buying the entangled particles idea.
Then scroll down a bit.
And several butcher’s aprons.
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.
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.
What kind of light do you shine on a photon to take a picture of it?
Guess it is some kind of special light,.....LOL!
Very interesting. Thanks for posting.
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.
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?
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.
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.
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.
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