Quantum-based technologies offer many advantages over their classical counterparts, such as speeding up certain computations with the help of entangled qubit states. Now, Kavan Modi from Monash University in Australia and colleagues have added another perk to “going quantum”: faster battery charging. The team considered a model for a nanoscale battery with quantized energy states. They found that the charging time can be reduced if multiple copies of this quantum battery interact with each other, but that, surprisingly, it’s not necessary that the battery states be entangled.
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