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Physics - Mathematics - 10.08.2015
Paving the way for a faster quantum computer
Paving the way for a faster quantum computer
A team of physicists from the University of Vienna and the Austrian Academy of Sciences have demonstrated a new quantum computation scheme in which operations occur without a well-defined order. The researchers led by Philip Walther and Caslav Brukner used this effect to accomplish a task more efficiently than a standard quantum computer.

Mathematics - 03.12.2014
Carrot or stick?
What motivates people to cooperate in collaborative endeavors? "First carrot, then stick". Tatsuya Sasaki, mathematician from the University of Vienna, has put forth for the first time ever a mathematical proof of this process. The study is recently published online in the "Journal of the Royal Society Interface".

Mathematics - Philosophy - 30.06.2014
Logic is Like Abstract Art
Modern logic unleashed new areas of mathematics. Even when language and intuition fail, conclusive theories can be constructed with the help of logic. When little children share chocolates, they already have to deal with numbers. Even complicated mathematical objects can often be grasped intuitively.

Mathematics - Computer Science - 23.06.2014
This Sentence is Wrong
The great Viennese logician Kurt Gödel studied statements which refer to themselves - and his results shook the foundations of mathematics. "All Cretans are liars", said Epimenides, a Cretan. But this means that his statement must be a lie too. But then it is false that Cretans are liars and the statement must be true.

Physics - Mathematics - 17.06.2014
Laser Physics upside down
At the Vienna University of Technology a system of coupled lasers has been created which exhibits truly paradoxical behaviour: An increase in energy supply switches the lasers off, reducing the energy can switch them on. Sound waves fade, water waves ebb, light waves are dissipated by a wall. The absorption of waves is a very common phenomenon.

Physics - Mathematics - 30.09.2013
Quantum computers: Trust is good, proof is better
A quantum computer can solve tasks where a classical computer fails. The question how one can, nevertheless, verify the reliability of a quantum computer was recently answered in an experiment at the University of Vienna. The conclusions are published in the reputed scientific. The harnessing of quantum phenomena, such as superposition and entanglement, holds great promise for constructing future supercomputers using quantum technology.

Physics - Mathematics - 04.04.2011
Vienna Physicists Create Tap-Proof Waves
Scientists at the Vienna University of Technology (TU Vienna) have developed a method to steer waves on precisely defined trajectories, without any loss. This way, sound waves could be sent directly to a target, avoiding possible eavesdroppers. Tossing a ball to someone without anyone else being able to catch it is simple.