Contact: Florian Aigner
Vienna University of Technology
Caption: Principle of the experiment: In the beginning the atom cloud is prepared in an almost perfectly ordered quantum state (symbolized by gray atoms). Over time, this quantum order is lost and disorder spreads through the system with a certain well-defined velocity (symbolized by the mixture of red and gray atoms). This disorder can be associated with the emergence of a temperature. The initial quantum properties are lost only through interactions between the atoms, without any influence from the outside world.
Credit: Vienna University of Technology
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