Quantum mechanics once baffled scientists. Now it’s changing the world
Quantum mechanics once baffled scientists. Now it’s changing the world
https://www.sciencedaily.com/releases/2026/06/260624025516.htm
Publish Date: 2026-07-05 14:17:00
Source Domain: www.sciencedaily.com
For much of the early 20th century, quantum mechanics was one of the most puzzling ideas in science. The theory challenged conventional thinking and left even leading physicists struggling to make sense of its implications. A century later, it has become the foundation of technologies that influence daily life, including lasers, microchips, secure communications, and emerging quantum computers.
In a new perspective article published in Science, Dr. Marlan Scully of Texas A&M University reflects on the remarkable evolution of quantum mechanics, from an abstract theory about tiny particles to a powerful framework helping researchers tackle some of the most difficult questions in science.
“Quantum mechanics started as a way to explain the behavior of tiny particles,” said Scully, who is also affiliated with Princeton University. “Now it’s driving innovations that were unimaginable just a generation ago.”
Scully has played a major role in advancing the field. He co-authored the influential textbook Quantum Optics, a resource that has educated generations of physicists. His research in coherent nanoscale laser spectroscopy helped make it possible to study molecules with atomic-scale precision. He has also developed groundbreaking concepts involving quantum heat engines, which challenge traditional assumptions about thermodynamic efficiency and may one day lead to new energy technologies.
From Schrödinger’s Cat to Quantum Technology
One of the most famous illustrations of quantum mechanics came in 1935, when Erwin Schrödinger proposed his cat paradox. The thought experiment suggested that a cat could exist in a state that is both alive and dead until it is observed. Schrödinger introduced the idea to highlight how strange quantum theory appeared.
Today, those once-bizarre concepts have moved far beyond philosophical debates.
“That ‘quantum weirdness’ is no longer just a philosophical puzzle,” said Scully. “It’s the foundation of quantum computing, quantum…
