SCIENTISTS in Scotland have captured a photograph for the first time of a phenomenon that Albert Einstein once described as "a spooky action at a distance".
The image is of a strong form of quantum entanglement, where two particles interact with each other and share their physical states for an instant, no matter how large the distance that separates them.
This connection is known as Bell's entanglement and underpins the field of quantum mechanics.
Paul-Antoine Moreau, of the Faculty of Physics and Astronomy of the University of Glasgow, said: "The image we have captured is an elegant demonstration of a fundamental property of nature, seen for the first time in the form of an image. an exciting result that could be used to advance the emerging field of quantum computing and lead to new types of images. "
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Einstein thought that quantum mechanics was "creepy" because of the snapshot of the apparent remote interaction between two entangled particles. This seemed incompatible with elements of his special theory of relativity.
Scientist Sir John Bell later formalized this concept by describing a strong form of entanglement that shows this characteristic. Bell's entanglement is being exploited in practical applications such as quantum computing and cryptography, however, it has never before been captured in a single image.
The team of physicists at the University of Glasgow recorded the phenomenon after designing a system that triggers a stream of entangled photons from a quantum light source to "unconventional" objects, which are shown in liquid crystal materials that change the phase of the photons. as they pass through