Word: photonics
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...most challenging demonstrations for Rueckner lies in the area of quantum mechanics. In the "single photon interference demo," the team sends single photons, one at a time, through slits in a screen. Even though the photons are sent sequentially, students watch the interference patterns as they are projected onto a screen. The result is "completely mind boggling," says Rueckner, but a visual demonstration, rather than a classical explanation, aids the students' understanding...
...Brigham and Women's, Holman led the development of single-photon emission computer tomography (SPECT...
...string theory you only have one thing; that's the string. [When it] rotates and vibrates in different ways, it can take on the guise of an electron or a quark or a photon," he says. "Everything, in principle, can come out of the string...
...particle has assisted scientists in creating a more unified theory because it consists of a photon-like particle and of an unknown entity, known as the Goldstone Boson...
...outcome was clear: a change in one photon did alter the polarization of the other. In other words, nature chose quantum mechanics, showing that the two related photons could not be considered separate objects, but rather remained connected in some mysterious way. This experiment, argues physicist Henry Stapp of Lawrence Berkeley Laboratories, imposes new limits on what can be established about the nature of matter by proving that experiments can be influenced by events elsewhere in the universe...