1.5k citations · 5.8k across the 39 of their papers we have counts for
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Are there fundamental limits for observing quantum phenomena from within quantum theory?
Johannes Kofler, Caslav Brukner
Does there exist a limit for the applicability of quantum theory for objects of large mass or size, or objects whose states are of large complexity or dimension of the Hilbert spac…
Feasibility of 300 km Quantum Key Distribution with Entangled States
Thomas Scheidl, Rupert Ursin, Alessandro Fedrizzi +8
A significant limitation of practical quantum key distribution (QKD) setups is currently their limited operational range. It has recently been emphasized (X. Ma, C.-H. F. Fung, and…
Experimental generation of single photons via active multiplexing
Xiao-song Ma, Stefan Zotter, Johannes Kofler +2
An on-demand single-photon source is a fundamental building block in quantum science and technology. We experimentally demonstrate the proof of concept for a scheme to generate on-…
Entanglement between smeared field operators in the Klein-Gordon vacuum
Magdalena Zych, Fabio Costa, Johannes Kofler +1
Quantum field theory is the application of quantum physics to fields. It provides a theoretical framework widely used in particle physics and condensed matter physics. One of the m…