28-03-22 Battery next challenge

Regarding advances on batteries for EVs for instance:


Quantum batteries are devices made from quantum states, which store and release energy in a fast and efficient manner, thus offering numerous possibilities in future technological applications.

They offer a significant charging speed up when compared to classical batteries, due to the possibility of using entangling charging operations.

Was showed that the maximal speed up that can be achieved is extensive in the number of cells, thus offering at most quadratic scaling in the charging power over the classically achievable linear scaling.

To reach such a scaling, a global charging protocol, charging all the cells collectively, needs to be employed.

This concludes the quest on the limits of charging power of quantum batteries and adds to other results in which quantum methods are known to provide at most quadratic scaling over their classical counterparts.



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Source: Department of Physics and Astronomy, Seoul National University



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