"One of the most far-out phenomena of quantum theory is quantum entanglement, the idea that particles of the same origin, which were once connected, always stay connected. Even if they separate and move far apart in time and space, they continue to share something beyond a mere bond — they shed their original quantum states and take on a new, united quantum state which they maintain forever. This means if something happens to one particle, it affects all the others with which it’s entangled." (NASA) 🔎 the interplay between Quantum Entanglement and Decoherence