Scientists for the first time have managed to capture the first actual photo of quantum entanglement in the world. This phenomenon was so strange that Albert Einstein described it as a spooky action at a distance. This study has been published in the journal Science Advances.
This breathtaking image was captured by the scientists at the University of Glasgow in Scotland. From an aesthetic point of view, it may not look much however if it is looked at this way that this grey image is the first time we have observed the particle interaction that forms the cornerstone of quantum computing and underpins the odd science of quantum mechanics, then it is indeed very special.
Quantum entanglement takes place when two particles are so closely linked that they cannot be separated and whatever happens to one of the particles affects the other one spontaneously, irrespective of the distance between them. Thus it was described as “a spooky action at a distance“.
This image shows entanglement between two photons. They interacted for a short period of time sharing the physical states. Paul-Antoine Moreau, the first author of this paper said that the image demonstrated a very fundamental property of nature. For capturing the photo, the team of researchers made a system which blasted streams of photons entangled with each other at non-conventional objects. Then they split up the entangled photons and passed one of the beams through a liquid crystal object called β-Barium Borate, that triggered four phase transitions. They also took the photos of the entangled pair of photons simultaneously which were going through the phase transitions, although they did not pass through the liquid crystal. The camera managed to capture the images which showed that they shifted in the same direction even though they had already split up. Thus, in other words, they were entangled.
Although Albert Einstein made quantum entanglement very famous all around the globe, it was another physicist named John Stewart Bell who actually defined quantum entanglement and also established a test known as “Bell Inequality”. True quantum entanglement can be confirmed if it is possible to break the Bell Inequality.
The team mentioned in their report that in their experiment they were able to demonstrate the violation of Bell Inequality in the captured images. Thus one hand it opens up to new schemes of quantum imaging and it also promises possibilities of quantum information schemes based on spatial variables.