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Idea formulated 25 years ago can finally help us explain the concept of shared reality. What are the states of matter that we do not see?
“Every day, when you go out, see things. And see them as located. You don’t see strange quantum characteristics. So the question is: how can we do this division between quantum and classic? ”So question scientist Akram Touil na.
To help us answer, we have the newly disputed quantum Darwinism. This idea was first proposed in 2000 by Wojciech Zurek, and is based on the idea that each quantum object is a cloud of possible states until it is measured or observed. So, it has one state, the so -called “classic”.
The states we eventually see are, according to quantum Darwinism, more robust than the rest in the cloud of possibilities. In the language of natural selection, it is said that these states are more “suitable”.
Now, a new led by Zurek and Touil and published Try mathematically This idea.
They studied a scenario in which each observer only has access to a fraction of the object environment and never to the object itself. The study was done by calculating the “Mutual Information” Of the observers, a number that captures the overlap between what each one learns about the object.
They also used a practical example to prove the theory, eat the help of a quantum computer, with two of the which are designated as the object and the remaining 10 as an environment.
Gerardo Adesso, a researcher at the University of Nottingham, in the United Kingdom, says the new work reinforces quantum Darwinism as a way of understanding how the classic world emerges from quantum.
Now it’s time to go beyond QBits: researchers want to apply these rules to the whole physical world.
