What does it mean to be ‘quantum’? A physicist explains the basics behind Einstein’s spooky actions at a distance

The article delves into the intriguing world of quantum mechanics, explaining how particles can behave in ways that challenge our classical understanding, such as 'spooky actions at a distance' noted by Einstein. The fundamental properties at the quantum level hold promise for revolutionary advancements in computing speed and cybersecurity. Understanding these principles is crucial because they could pave the way for technologies that outperform current systems, fundamentally altering industries from data security to computational power.