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Next
Event
Friday, October 24, 2008, 07:00 PM: Life Extension with Jerry Emanuelson
Jerry will be talking about his 25+ year experience with life extension treatments, including hormone injections, his longevity doctor, what treatments to ask a doctor for, how to find and guide a doctor, an interesting example of the 'medical priesthood vs. empowered patient' conflict as more healthcare treatments are about prevention/enhancement, getting his DNA scanned with deCODEme and opensourcing his genome on the SNPedia.com, and more.
More...
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Quantum Physics
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Harnessing quantum interference enables single aromatic annulene molecules to function as transistors.
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 Photons rarely interact—which makes it challenging to build all-optical devices in which one light signal controls another. Even in nonlinear optical media, in which two beams can interact because of their influence on the medium's refractive index, this interaction is weak at low light levels. Here, we propose a novel approach to realizing strong nonlinear interactions at the single-photon level, by exploiting the strong coupling between individual optical emitters and propagating surface plasmons confined to a conducting nanowire. We show that this system can act as a nonlinear two-photon switch for incident photons propagating along the nanowire, which can be coherently controlled using conventional quantum-optical techniques. Furthermore, we discuss how the interaction can be tailored to create a single-photon transistor, where the presence (or absence) of a single incident photon in a 'gate' field is sufficient to allow (or prevent) the propagation of subsequent 'signal' photons along the wire.
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Excerpts from The Unconscious Quantum: Metaphysics in Modern Physics and Cosmology.
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