Technology

Physicists Finally Observe a Link Between Quantum Criticality And Entanglement !

Strange metal discovered, acts weird at very low temperatures.

‘The strange metal’ works differently than expected at very low temperatures. The metal is a film that is a mix of ytterbium, rhodium, and silicon.

Image result for strange metal

The thing about any strange metals is that they have a very unusual connection between electrical resistance and temperature, said physicist Silke Bühler-Paschen from Vienna University of Technology in Austria.

On the other hand, simple metals such as copper or gold, this does not seem to be due to the thermal movement of the atoms. The reason is explained to be quantum fluctuations at the absolute zero temperature.

The fluctuations are supposed to represent a quantum criticality.  Quantum criticality is that point between quantum states, which are the equivalent of transition between liquids, solids, and gases in classical physics.

The team has said that the total cascade of electrons is one of the most promising observations which can give a link between quantum criticality and entanglement.

Physicist Qimiao Si, from Rice University, said that while they think about quantum entanglement, they think about smaller things. However, they do not associate macroscopic objects.

Image result for strange metal

At the quantum critical point, things get so collective that the chances of seeing the effects of entanglement can be clearly seen. This is because in a metallic film that contains billions of billions of quantum mechanical objects.

The experiments of Bühler-Paschen, Si and colleagues were extremely challenging on many different levels

The experiments which were run by Bühler-Paschen, Si, and colleagues were extremely challenging to start with on many different levels. Firstly, the highly complex materials synthesis required to create the strange metal, to the delicate terahertz spectroscopy required to observe the electrons.

“It was really a dream experiment,” reported the scientist.

We just got closer to understanding how these quantum phases switch us a better chance of being able to control them in the future.

 

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Kaustuv Chattopadhyay

Engineering Undergrad at NIT DGP| CS Enthusiast| Content Creator
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