How can we certify the entanglement or nonlocality of a quantum system composed by infinitely many particles when we just have access to a finitely many? In a recent publication in Physical Review Letters, the IQOQI group led by M. Navascués answers…

Einsteins Äquivalenzprinzip ist für das Verständnis der Gravitation und der relativistischen Raumzeit von fundamentaler Bedeutung. Aus ihm folgt, dass unter dem Einfluss der Gravitation alle Körper in derselben Art und Weise fallen – sei es eine…

Einstein‘s „spooky action at a distance“ persists even at high accelerations, researchers of the Austrian Academy of Sciences were able to show in a new experiment. A source of entangled photon pairs was exposed to massive stress: The photons‘…

Our understanding of the world is mostly built on basic perceptions, such as that events follow each other in a well-defined order. Such definite orders are required in the macroscopic world, for which the laws of classical physics apply. However, in…

Clocks at the interplay of the two fundamental theories of modern physics

Common goals, mutual interests – together with strong collaborators, we get closer our visions. We are proud to present our new Memorandum of Understanding

Scientists at the University of Vienna (Vienna Center for Quantum Science and Technology, VCQ) and the Austrian Academy of Science (IQOQI Vienna) have discovered a new method how to experimentally realize a manifold of different quantum states that…

Quantenphysiker der Österreichischen Akademie der Wissenschaften um Anton Zeilinger konnten mit Hilfe 600 Jahre alter kosmischer Lichtteilchen einen entscheidenden Beweis zur Quantenverschränkung erbringen. Im Fachjournal „Physical Review Letters“…

If a source emits photon pairs, their momenta can be correlated. For example, if one photon is always emitted in the exactly opposite direction of the other, the two photons show perfect correlation. On the other hand, the two photons could be…

The Paul Ehrenfest Best Paper Award for Quantum Foundations for the year 2015 was awarded jointly to three publications by groups at the TU Delft (The Netherlands), the Austrian Academy of Sciences (Austria) and the National Institute of Standards…