Relatively Certain

Can you see a single photon? Does it weigh anything? Emily Edwards talks to Alan Migdall, an expert on single photon technology. Part 2 of three installments on photons. 

Emily Edwards and guests Steve Rolston and Alan Migdall talk about the history of the photon. Photons sometimes behave both like particles and waves. The nature of light has intrigued scientists for centuries. Quantum physics provides clarity in the early twentieth century.

Phil Schewe discusses how matter, such as atoms and electrons, can display wave-like properties. Steve Rolston describes early scattering experiments. Gretchen Campbell talks about matter waves in the context of modern Bose-Einstein condensate experiments.

Fifty years ago, Theodore Maiman invented the laser. Steve Rolston and two guest experts describe how the device has utterly transformed quantum information science.

Modern timekeeping, and the ongoing effort to slice time into ever-thinner pieces, now depend critically on techniques of quantum information science.

TQW looks at recent research in the weird world of "ultracold" chemistry, where scientists have just discovered that chemical reactions can occur at only a few billionths of a degree above absolute zero.

A discussion of one of the most eerie aspects of quantum mechanics -- the utter randomness of measurements -- with guest Dr. Chris Monroe of JQI. Topics include the weird state called "entanglement," and the uses of quantum-mechanical systems for generating random numbers for data encryption and other purposes.

A primer on the fundamental terms and concepts of quantum information science, with guest Dr. Carl Williams, Chief of the Atomic Physics Division at the National Institute of Standards and Technology. Topics include the bizarre condition called superposition, the nature of quantum bits ("qubits") and more.