Quantum physicists have discovered that quantum mechanics enlarges our capacity to reason in unexpected ways. The notorious Prisoner’s Dilemma, in which the rational choice is the wrong choice, can be eliminated by quantum entanglement. A more recent (and still unproved) claim is that a quantum system of voting could avoid the inconsistencies of ordinary voting….
Both high-valued diamond and low-prized graphite consist of exactly the same carbon atoms. The subtle but nevertheless important difference between the two materials is the geometrical configuration of their building blocks, with large consequences for their properties. There is no way any kind of material could be diamond and graphite at the same time. However,…
A research team led by the University of Vienna has developed a new method for entangling single photons that gyrate in opposite directions. This is the first step towards entangling and twisting even macroscopic, spatially separated objects in two different directions, according to the team. The findings of this study have been published in the…
Amir D. Aczel blogs about physics and cosmology for Discover’s Crux: If somebody told you that there are angels floating in space, observing our world and forming their impressions of our everyday reality, you would think that this person is nuts—a religious fanatic with an active imagination, and certainly not a scientist. Scientists, as we…
Physicists have proposed an experiment that could force us to make a choice between extremes to describe the behavior of the Universe. The proposal comes from an international team of researchers from Switzerland, Belgium, Spain and Singapore, and is published in Nature Physics. It is based on what the researchers call a ‘hidden influence inequality.’…
There’s a notorious problem with defining information within physics, namely that on the one hand information is purely abstract, and the original theory of computation as developed by Alan Turing and others regarded computers and the information they manipulate purely abstractly as mathematical objects. Many mathematicians to this day don’t realize that information is physical…
In a key step toward creating a working quantum computer, Princeton researchers have developed a method that may allow the quick and reliable transfer of quantum information throughout a computing device The finding, by a team led by Princeton physicist Jason Petta, could eventually allow engineers to build quantum computers consisting of millions of quantum…
Scientists like to think that true measures of our understanding are our ability to predict something, and, in experimental physics, control something. This year’s Nobel Prize in physics has been awarded to Serge Haroche and David Wineland for controlling the quantum world in ways that, not so long ago, were simply unthinkable. In this case,…
In a laboratory in Scotland, a revolutionary kind of laser is taking shape – the first one to be made out of an artificial black hole. Once complete, the device could help confirm mounting evidence that real black holes, despite their name, emit light. A black-hole laser could also find practical uses in devices that…
University of Adelaide applied mathematicians have extended Einstein’s theory of special relativity to work beyond the speed of light. Einstein’s theory holds that nothing could move faster than the speed of light, but Professor Jim Hill and Dr Barry Cox in the University’s School of Mathematical Sciences have developed new formulas that allow for travel…