Quantum Mechanics: From Paradox to Tech Powerhouse

Quantum mechanics has evolved from a puzzling theory to the backbone of modern technology, powering lasers, chips, quantum computing, and secure communications. Texas A&M physicist Marlan Scully surveys the journey—from Schrödinger’s cat to coherence and entanglement enabling new sensors and cryptography, to quantum heat engines that can exceed classical limits. The reach extends into biology and cosmology, while open questions about unifying gravity with quantum theory promise a continued scientific adventure.