Vacuum chamber containing the atom chip. Credit: Thomas Schweigler, TU Wien
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 quite likely that this person will also surpass the average weight. This is because, statistically, knowledge about one variable often gives us some insight into another.
Quantum physics takes these correlations to another level, establishing even more potent connections between disparate quantities: distinct particles or segments of a vast quantum system can “share” a specific amount of information. This intriguing theoretical premise suggests that the calculation of this “mutual information” is surprisingly not influenced by the system’s overall volume, but only by its surface.
This surprising result has been confirmed experimentally at the TU Wien and published in Nature Physics. Theoretical input to the experiment and its interpretation came from the Max-Planck-Institut für Quantenoptik in Garching, FU Berlin, ETH Zürich, and New York University.
“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 Vienna Center for Quantum Science and Technology (VCQ) — Atominstitut of TU Wien, first author of the current publication.
“If the system is in equilibrium, then particles in different areas of the container know nothing about each other. One can consider them completely independent of each other. Therefore, one can say that the mutual information these two particles share is zero.” READ MORE...
If you were to randomly pick an individual from a crowd who stands remarkably taller than the average, it’s quite likely that this person will also surpass the average weight. This is because, statistically, knowledge about one variable often gives us some insight into another.
Quantum physics takes these correlations to another level, establishing even more potent connections between disparate quantities: distinct particles or segments of a vast quantum system can “share” a specific amount of information. This intriguing theoretical premise suggests that the calculation of this “mutual information” is surprisingly not influenced by the system’s overall volume, but only by its surface.
This surprising result has been confirmed experimentally at the TU Wien and published in Nature Physics. Theoretical input to the experiment and its interpretation came from the Max-Planck-Institut für Quantenoptik in Garching, FU Berlin, ETH Zürich, and New York University.
“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 Vienna Center for Quantum Science and Technology (VCQ) — Atominstitut of TU Wien, first author of the current publication.
“If the system is in equilibrium, then particles in different areas of the container know nothing about each other. One can consider them completely independent of each other. Therefore, one can say that the mutual information these two particles share is zero.” READ MORE...
