Authors: George Rajna
Nearly a century after it was theorized, Harvard scientists have succeeded in creating the rarest-and potentially one of the most valuable-materials on the planet.  ORNL researchers have discovered a new type of quantum critical point, a new way in which materials change from one state of matter to another.  New research conducted at the University of Chicago has confirmed a decades-old theory describing the dynamics of continuous phase transitions.  No matter whether it is acoustic waves, quantum matter waves or optical waves of a laser—all kinds of waves can be in different states of oscillation, corresponding to different frequencies. Calculating these frequencies is part of the tools of the trade in theoretical physics. Recently, however, a special class of systems has caught the attention of the scientific community, forcing physicists to abandon well-established rules.  Until quite recently, creating a hologram of a single photon was believed to be impossible due to fundamental laws of physics. However, scientists at the Faculty of Physics, University of Warsaw, have successfully applied concepts of classical holography to the world of quantum phenomena. A new measurement technique has enabled them to register the first-ever hologram of a single light particle, thereby shedding new light on the foundations of quantum mechanics.  A combined team of researchers from Columbia University in the U.S. and the University of Warsaw in Poland has found that there appear to be flaws in traditional theory that describe how photodissociation works.  Ultra-peripheral collisions of lead nuclei at the LHC accelerator can lead to elastic collisions of photons with photons.  Physicists from Trinity College Dublin's School of Physics and the CRANN Institute, Trinity College, have discovered a new form of light, which will impact our understanding of the fundamental nature of light.  Light from an optical fiber illuminates the metasurface, is scattered in four different directions, and the intensities are measured by the four detectors. From this measurement the state of polarization of light is detected.  Converting a single photon from one color, or frequency, to another is an essential tool in quantum communication, which harnesses the subtle correlations between the subatomic properties of photons (particles of light)
Comments: 36 Pages.
[v1] 2017-01-26 14:52:51
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