Phys.org October 25, 2019
Researchers in Canada have provided a theoretical demonstration that creating a loss-free quantum battery is possible—offering an advantage over previously proposed quantum batteries. To realize their idea, the team considered an open quantum network model with high structural symmetry as a platform for storing excitonic energy. Using this model, they showed it is possible to store energy without any loss, despite being open to an environment. The key is to prepare this quantum network in a dark state when the network cannot exchange energy with its environment, the system becomes immune to all environmental influences. The battery is highly robust to energy losses. The researchers suggested a general method of discharging the stored energy from the battery upon demand that involves breaking the structural symmetry of the network in a controlled way…read more. TECHNICAL ARTICLE
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