How do quantum particles exchange information? An intriguing hypothesis regarding quantum information has recently been validated through experimental verification conducted at TU Wien. If you were to randomly pick an individual from a crowd who stands remarkably taller than the average, it's qui
“Let’s imagine a gas container in which small particles fly around and behave in a very classical way like small spheres,” says Mohammadamin Tajik of the, first author of the current publication.
“For such cases, there has long been a prediction about the mutual information shared between different subsystems of a many-body quantum system,” explains Mohammadamin Tajik. “In such a quantum gas, the shared mutual information is larger than zero, and it does not depend on the size of the subsystems — but only on the outer bounding surface of the subsystem.”
“The experiment is very challenging,” says Jörg Schmiedmayer. “We need complete information about our quantum system, as best as quantum physics allows. For this, we have developed a special tomography technique. We get the information we need by perturbing the atoms just a bit and then observing the resulting dynamics. It’s like throwing a rock into a pond and then getting information about the state of the liquid and the pond from the consequent waves.
France Dernières Nouvelles, France Actualités
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