Quantum coherence only persists for isolated particles – but whether a particle is isolated depends on the way we look at it. This leads to an apparent “paradox of the third particle”: coherence seems to disappear simply by changing the description.…

“You run, we teleport”

Physicists at the Austrian Academy of Sciences and the University of Vienna have been successful in their experiments creating the world’s first photonic quantum teleportation into error corrected qubits useful for quantum computers.

A new paper by the Ursin group shows how you can get the most of your entanglement-based quantum key distribution (QKD) implementation: Their simple but very accurate model for continuously pumped QKD allows not only to precisely predict the…

In his recent paper, Wolfgang Wieland, researcher at IQOQI-Vienna, looks at the gravitational phase space in a region. The region is defined operationally as a laboratory bounded by light rays. At the boundary, otherwise unphysical gauge degrees of…

Researches experimentally demonstrated how an entanglement distillation scheme can be rethought to distribute quantum entanglement through noisy environments in a highly efficient manner.

A collaboration between Armin Tavakoli - postdoc at IQOQI Vienna - and researchers the University of Science and Technology of China, has shown that data collected in a single experiment can be used to robustly certify the entanglement of a quantum…

Researchers from IQOQI-Vienna (Austrian Academy of Sciences) in the group of Rupert Ursin found a way to increase the secret key rate over long-distance links, distributed via wavelength-multiplexed entangled photons with unprecedented high rates.…

In den Gedankenexperimenten von Physiker/innen spielen hin und wieder allwissende und omnipotente Dämonen eine Rolle, wenn es darum geht, grundlegende Konzepte der Physik zu hinterfragen. Ein internationales Forschungsteam mit Beteiligung der ÖAW…

The quantum movements of a small glass sphere could be controlled for the first time in Vienna by combining microscopy with control engineering, setting the course for future quantum technologies.