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Ultra-Charging Quantum Batteries

A giant leap has been made in the battery charging technology by a team of researchers from Italian Institute of Technology in Genova, Italy. Applying the laws of quantum mechanics (QM), the team succeeded theoretically to speed up the charging-time of quantum batteries.

Physicist Dario Ferraro, the main author of the paper “High-power collective charging of a solid-state quantum battery” along with the co-authors, solved a model of quantum batteries (QB) which can be engineered in solid-state architectures.

Entanglement, which is a primary law of QM, is showed to be the main reason behind the enhanced charging duration. When the QB units are entangled, and then coupled to a certain quantum energy source, enhancement in charging power occurs compared to the situation where the units are charged individually (in parallel).

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However, the generation of entanglement according to phys.org is described as follows: “the units are all coupled to a common quantized electromagnetic mode, and photons from the energy source mediate a long-range interaction between units, generating entanglement among them.”

“Our work aims at creating a bridge between abstract mathematical physics theorems and actual experimental implementation of quantum batteries,” Ferraro told phys.org.

The following enhancement of charging speed in QB will lead to a new research regarding the link between the QB charging power and its energy storage capacity.

References:

Dario Ferraro et al. “High-Power Collective Charging of a Solid-State Quantum Battery.” Physical Review Letters. DOI: 10.1103/PhysRevLett.120.117702 
Also at: arXiv:1707.04930 [cond-mat.mes-hall] 
https://phys.org/news/2018-03-quantum-speed-up-batteries.html#jCp