The Winter Colloquium on the Physics of Quantum Electronics, known as PQE is an annual physics conference that attracts the world's experts in laser physics, quantum physics, and many other areas. January 2019 marked the 49th consecutive winter meeting.

PQE is organized by Marlan Scully. Prof. Scully has been in charge of the conference since its inception. Historical information about the conference can be found here.

PQE is held at Snowbird Ski and Summer Resort. All events take place in the Cliff Lodge at Snowbird. Snowbird is in Little Cottonwood Canyon, in the Wasatch Mountains near Salt Lake City, Utah, in the United States.