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For the first time ever, Physicists at the University of Glasgow in Scotland have captured an image of a type of strong quantum entanglement referred to as Bell entanglement.
This is what it looks like
The particular type of entanglement investigated in the experiment, Bell entanglement, is named after John Stewart Bell, the author of Bell's Theorem which rules out local hidden variables as a viable explanation of quantum mechanics.
Bell formalised the concept of quantum entanglement and was a notable critic of Einstein's principle of local realism – both the assumption that nothing can move faster than the speed of light, and the assumption that a particle must objectively have a pre-existing value in order to be measured.
The researchers results (full article) were published last week in the journal Science Advances.
The image we've managed to capture is an elegant demonstration of a fundamental property of nature, seen for the very first time in the form of an image," said Dr Paul-Antoine Moreau of the University of Glasgow's School of Physics and Astronomy, and lead author of the paper.
"It's an exciting result which could be used to advance the emerging field of quantum computing and lead to new types of imaging."
Scientists are certainly burning the Type Ia Supernova (*) at both ends lately - from imaging black holes to imaging quantum entanglement.
(Score: 2) by Rupert Pupnick on Monday July 15 2019, @01:40PM (1 child)
I’m willing to accept that there’s a subtle theoretical difference between “unmeasured” and “undetermined”. We’ve had a few posts in another article by some smart folks who expended significant effort to explain it.
What I’d like to know is how this distinction would manifest itself in a practical application, and whether it prevents or permits you to actually build anything useful with it.
(Score: 2) by JoeMerchant on Monday July 15 2019, @03:16PM
So far, the primary "spooky action at a distance" application advertised seems to be the transfer of randomness from A to B with some assurance that nobody has "read the mail" along the way... A and B can get simultaneous knowledge of each other's random state, though it is a bit unclear how they know if the state has been read before they read it.
Otherwise, there is a steadfast assertion that instant communication at a distance is impossible.
Still, one can always dream up applications, such as:
Alice and Bob live on opposite sides of Australia. Alice wants to send Bob a priceless diamond and part of the security for the shipment is a random selection of route. To both decide and communicate the route to Bob's people Alice sends entangled photons...
🌻🌻 [google.com]