Brown University researchers have demonstrated for the first time a method of substantially changing the spatial coherence of light.
Optics & Photonics
Oct 18, 2017
2
614
(Phys.org)—Physicists have performed a variation of the famous 200-year-old double-slit experiment that, for the first time, involves "exotic looped trajectories" of photons. These photons travel forward through one slit, ...
In the double slit experiment, a particle travels on two different paths at the same time. Something similar can be observed when a helium atom is ionized with a laser beam. The ionization of helium can happen via two different ...
Quantum Physics
Nov 10, 2016
1
225
One of the differences between lasers and desk lamps is that laser light is spatially coherent, meaning the peaks and valleys of the light waves are correlated with each other. The jumbled, uncorrelated waves coming from ...
Optics & Photonics
Sep 16, 2016
49
452
Ever since Democritus – a Greek philosopher who lived between the 5th and 4th century's BCE – argued that all of existence was made up of tiny indivisible atoms, scientists have been speculating as to the true nature ...
General Physics
May 20, 2016
38
65
Here's a nice surprise: quantum physics is less complicated than we thought. An international team of researchers has proved that two peculiar features of the quantum world previously considered distinct are different manifestations ...
Quantum Physics
Dec 19, 2014
122
9
(Phys.org) —It was another interesting week in pure physics research as a team in India revisited superposition with a proposed resolution of the double-slit experiment paradox using Feynman path integral formalism—they're ...
(Phys.org) —The Schrödinger's Cat thought experiment, published in 1926 by Erwin Schrödinger, may be the most widely-known metaphorical explanation of quantum superposition and collapse. (Superposition is a fundamental ...
(Phys.org) —The precise methodology of Richard Feynman's famous double-slit thought-experiment – a cornerstone of quantum mechanics that showed how electrons behave as both a particle and a wave – has been followed ...
General Physics
Mar 13, 2013
26
0
(Phys.org)—Quantum physics presents several counterintuitive features, including entanglement, tunneling and – as demonstrated in double-slit experiments – wave-particle duality. When studying wave-particle duality, ...
