Observing the quantum behavior of light is a big part of Alan Migdall's research at the Joint Quantum Institute. Many of his experiments depend on observing light in the form of photons -- the particle complement of light waves -- and sometimes only one photon at a time, using "smart" detectors that can count the number of individual photons in a pulse. Furthermore, to observe quantum effects, it is normally necessary to use a beam of coherent light, light for which knowing the phase or intensit...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/_...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/_...