Mark Jensen, Nick Jensen, Gerry Wallace, Mark Wagner This is fancy, and a delightful proof of part of Quantum Theory :-) According to the laws of quantum physics, if no one detects which path a photon took, the particle effectively has taken both routes, and a photon pair is created in each path at once, says Gabriela Barreto Lemos, a physicist at Austrian Academy of Sciences and a co-author on the latest paper. In the first path, one photon in the pair passes through the object to be imaged, and the other does not. The photon that passed through the object is then recombined with its other ‘possible self’ — which travelled down the second path and not through the object — and is thrown away. The remaining photon from the second path is also reunited with itself from the first path and directed towards a camera, where it is used to build the image, despite having never interacted with the object. nature/news/entangled-photons-make-a-picture-from-a-paradox-1.15781
Posted on: Fri, 29 Aug 2014 15:43:01 +0000
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