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- Radek Lapkiewicz, Peizhe Alvin Li, +4 authors Anton Zeilinger
- Nature
- 2011

In contrast to classical physics, quantum theory demands that not all properties can be simultaneously well defined; the Heisenberg uncertainty principle is a manifestation of this fact. Alternativesâ€¦ (More)

- Thomas Scheidl, Rupert Ursin, +8 authors Anton Zeilinger
- Proceedings of the National Academy of Sciencesâ€¦
- 2010

Bell's theorem shows that local realistic theories place strong restrictions on observable correlations between different systems, giving rise to Bell's inequality which can be violated inâ€¦ (More)

- Marissa Giustina, Alexandra Mech, +9 authors Anton Zeilinger
- Nature
- 2013

The violation of a Bell inequality is an experimental observation that forces the abandonment of a local realistic viewpoint--namely, one in which physical properties are (probabilistically) definedâ€¦ (More)

- N K Langford, S. Ramelow, Robert Prevedel, W. J. Munro, G. J. Milburn, Andrea Zeilinger
- Nature
- 2011

Single photons are excellent quantum information carriers: they were used in the earliest demonstrations of entanglement and in the production of the highest-quality entanglement reported so far.â€¦ (More)

S. Ramelow,1,2 A. Fedrizzi,2,* A. Poppe,1,3 N. K. Langford,1,2,â€ and A. Zeilinger1,2 1Vienna Center for Quantum Science and Technology (VCQ), Faculty of Physics, University of Vienna, Boltzmanngasseâ€¦ (More)

- Robert Fickler, Radek Lapkiewicz, +4 authors Anton Zeilinger
- Science
- 2012

Single photons with helical phase structures may carry a quantized amount of orbital angular momentum (OAM), and their entanglement is important for quantum information science and fundamental testsâ€¦ (More)

- Mario Krenn, Marcus Huber, Robert Fickler, Radek Lapkiewicz, S. Ramelow, Anton Zeilinger
- Proceedings of the National Academy of Sciencesâ€¦
- 2014

Entangled quantum systems have properties that have fundamentally overthrown the classical worldview. Increasing the complexity of entangled states by expanding their dimensionality allows theâ€¦ (More)

- Robert Fickler, Mario Krenn, Radek Lapkiewicz, S. Ramelow, Anton Zeilinger
- Scientific reports
- 2013

Quantum Entanglement is widely regarded as one of the most prominent features of quantum mechanics and quantum information science. Although, photonic entanglement is routinely studied in manyâ€¦ (More)

Information is central to quantum mechanics. In particular, quantum interference occurs only if there exists no information to distinguish between the superposed states. The mere possibility ofâ€¦ (More)

- S. Ramelow, Alessandro Farsi, +6 authors Alexander L. Gaeta
- Optics letters
- 2014

We observe strong modal coupling between the TE00 and TM00 modes in Si3N4 ring resonators revealed by avoided crossings of the corresponding resonances. Such couplings result in significant shifts ofâ€¦ (More)