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  • Event
    Quantum measurements and equilibration: modelling the emergence of objectivity via entropy maximisation
    26.04.2023
    The latter stands in conflict with the laws of thermodynamics and has evoked much debate. With the help of modern quantum statistical mechanics, we take the first step in formalising the hypothesis th
  • Event
    Quantum networks theory
    27.01.2022
    The hereby presented mathematical framework is anchored on solid grounds through numerous lemmas. Indeed, one might have feared that the familiar interrelations between the notions of unitarity, compl
  • News
    Quantum physicists achieve entanglement record
    11.04.2018
    Some of the new quantum technologies ranging from extremely precise sensors to universal quantum computers require a large number of quantum bits in order to exploit the advantages of quantum physics.
  • News
    Quantum physicists from the Austrian Academy of Sciences among the most cited researchers
    19.11.2020
    Among the more than 6,000 most frequently cited scientists in 2020, 37 are researchers who are at least partly working in Austria. Quantum physics research in Austria has been particularly praised: tw
  • News
    Quantum physics at a distance
    04.09.2012
    An international team led by the Austrian physicist Anton Zeilinger has successfully transmitted quantum states between the two Canary Islands of La Palma and Tenerife, over a distance of 143 km. The
  • News
    Quantum physics: entanglement is more intractable than expected
    26.05.2020
    Entanglement is one of the fundamental concepts of quantum mechanics, and it plays a fundamental role in many promising technologies, from quantum computers to quantum cryptography. However, proving t
  • Event
    Quantum principle of relativity
    11.01.2022
    We argue that elementary relativistic properties of spacetime lead to the emergence of a non-deterministic quantum-mechanical picture involving quantum superpositions and complex probability amplitude
  • Seite
    Quantum reference frames and spacetime
    Reference frames are ubiquitous in physics. Every time we set up an experiment, or merely describe the behaviour of a physical system, we do so by using, implicitly or explicitly, a reference frame. B
  • News
    Quantum revolution takes a leap forward
    24.01.2020
    Technological progress over the last century has enabled the processing and distribution of information in faster and more efficient ways. Termed the “digital revolution”, the effects thereof cover al
  • News
    Quantum times: when did the cuckoo sing?
    29.05.2020
    We are used to the fact that events are sharply localised in time. In a cuckoo clock, the cuckoo always calls at a precise time. Everybody looking at the clock would agree on this. However, a team of physicists led by Caslav Brukner from the University of Vienna and the Austrian Academy of Sciences showed that, when quantum mechanics and Einstein’s general relativity are combined, this might no longer be the case. When time “goes quantum” the temporal localisability of events becomes relative. In quantum times, the cuckoo can call at a precise time according to one observer, but some other observers might be totally uncertain about the time when it sings.