Although the term ‘quantum battery’ is a bit of a vague term, the cell that [Kieran Hymas] et al. demonstrate
<p>The general idea behind a [Davide Rossini] et al., but this new paper may be the first prototype cell demonstrating a reproducible effect.
In the here demonstrated cell a microcavity is created with strong light-matter coupling, allowing for both energy storage and discharging, with the illuminated particles super-absorbing the light with what the researchers claim to be due to these particles cooperating using a quantum mechanism. Effectively scaling up the cell would thus scale up the charge- and discharge rate faster than in a conventional chemical cell.
Whether this demonstration can be replicated and expanded upon remains to be seen, naturally. The stored energy in this experiment was very small and the storage time only very brief, so for now it serves primarily as an interesting experimental result for researchers to dig through.
