Roy J. Glauber, an American physicist who won the Nobel Prize for helping lay the foundations of quantum optics, providing an expanded and modern explanation of the properties of light, died Dec. 26. He was 93.
His death was announced by the Optical Society of America (OSA). Family members said he died at a hospital in Newton, Mass.
As a young man, Glauber worked at Los Alamos National Laboratory, where the atomic bomb was built. He was one of the last remaining people who saw the first bomb test in the New Mexico desert in 1945.
A longtime member of the physics faculty at Harvard University and an adjunct professor of optical sciences at the University of Arizona in Tucson, Glauber conducted work that provided a quantum explanation for the interaction between light and matter.