Part 6/12:
Frequently depicted in science fiction, the QEC capitalizes on this strange interconnectedness of entangled particles. In theory, if one particle's state can influence another across vast distances, couldn't that allow for FTL communication? The reality is far more nuanced and problematic.
At its heart, quantum entanglement is about correlations between measurement outcomes. For instance, if two particles are entangled, measuring the state of one can immediately determine the state of the other. However, the challenge arises when attempting to use this relationship to send meaningful information. While one might hope to encode a message in the spins of entangled particles, the outcome of these measurements is fundamentally random, leading to several key hurdles.