The ideas of superradiance [1] and superabsorption [2] in the article were new to me. The article [3] compares superradiance to superconductivity, but it's not clear if superradiance is as useful of a property as superconductivity. Now I'm wondering what other sorts of super-xxxx effects are possible via quantum properties.

[1] https://en.wikipedia.org/wiki/Superradiance

[2] https://www.nature.com/articles/ncomms5705

[3] https://arxiv.org/pdf/1805.03153