News tagged with information theory

Quantum engines must break down

Our present understanding of thermodynamics is fundamentally incorrect if applied to small systems and needs to be modified, according to new research from University College London (UCL) and the University of Gdańsk. The ...

dateJun 26, 2013 in Quantum Physics
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Playing quantum tricks with measurements

A team of physicists at the University of Innsbruck, Austria, performed an experiment that seems to contradict the foundations of quantum theory—at first glance. The team led by Rainer Blatt reversed a ...

dateFeb 15, 2013 in Quantum Physics
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Quantum copies do new tricks

One of the strange features of quantum information is that, unlike almost every other type of information, it cannot be perfectly copied. For example, it is impossible to take a single photon and make a number of photons ...

dateMar 22, 2012 in Quantum Physics
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The economics of database searching

(PhysOrg.com) -- Searching the internet might seem simple, but applying a little bit of economic theory to information retrieval can shed some light on the best search strategies to adopt, according to researchers.

dateAug 11, 2011 in Computer Sciences
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Explained: Gallager codes

In the 1948 paper that created the field of information theory, MIT grad (and future professor) Claude Shannon threw down the gauntlet to future generations of researchers. In those predigital days, communications ...

dateJan 21, 2010 in Computer Sciences
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