'NOVA: Einstein's Quantum Riddle'
(DVD / G / 2019 / PBS)
Overview: In an effort to disprove quantum mechanics Albert Einstein proposes one of it's strangest features; quantum entanglement.
DVD Verdict: Einstein called it "spooky action at a distance," but today quantum entanglement is poised to revolutionize technology.
Physicists have become gradually convinced that quantum entanglement is real, but a few doubts remain.
Here within 'Einstein's Quantum Riddle,' NOVA follows a ground-breaking experiment in the Canary Islands to use quasars at opposite ends of the universe to once and for all settle remaining questions.
We learn that over the past century, scientists have made huge strides in understanding the mind-bending rules that govern the microworld of atoms and subatomic particles.
But these rules, called quantum mechanics, contain one particularly bizarre, unexplained phenomenon: quantum entanglement.
Imagine two subatomic particles that mirror changes in each other instantaneously over any distance - apparently without communicating.
So yes, few things in science get crazier than quantum mechanics, with related theories sometimes sounding more like paranormal activity than physics. So when such theories gain experimental proof it's a big day for physicists!
As aforementioned, quantum entanglement is a curious phenomenon that occurs when two particles remain connected, even over large distances, in such a way that actions performed on one particle have an effect on the other.
For instance, one particle might be spun in a clockwise direction. The result on the second particle would be an equal anti-clockwise spin.
Three different research papers claim to have closed loopholes in 50-year-old experiments that demonstrate quantum entanglement, proving its existence more definitively than ever before.
"Things get really interesting when two electrons become entangled," says Ronald Hanson from the University of Delft. "They are perfectly correlated, when you observe one, the other one will always be opposite. That effect is instantaneous, even if the other electron is in a rocket at the other end of the galaxy."
Albert Einstein, Boris Podolsky and Nathan Rosen described this in a 1935 paper, concluding that either single-particle quantum entanglement was impossible, or that the quantum-mechanical definition of physical reality still needed some work.
Without giving their conclusions away, it's also said within this program that "You can't prove quantum mechanics, but hidden local action is incompatible with our experiment," and that "Our results agree with what quantum mechanics predicts about the spooky actions shared by entangled particles."
The rest, as they say, is out there for you now to explore (via this DVD first though, of course!) This is a Widescreen Presentation (1.85:1) enhanced for 16x9 TVs.