H. Weinfurter

Publications357
h-index63
Citations23,054
Highly Influential Citations386
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Experimental quantum teleportation
TLDR
It is shown that during teleportation, one of a pair of entangled photons are subjected to a measurement such that the second photon of the entangled pair acquires the polarization of the initial photon.
Violation of Bell's Inequality under Strict Einstein Locality Conditions
We observe strong violation of Bell's inequality in an Einstein-Podolsky-Rosen-type experiment with independent observers. Our experiment definitely implements the ideas behind the well-known work by…
Entanglement-based quantum communication over 144km
Quantum entanglement is the main resource to endow the field of quantum information processing with powers that exceed those of classical communication and computation. In view of applications such…
Experimental Demonstration of Free-Space Decoy-State Quantum Key Distribution over 144 km
TLDR
This link between the Canary islands of La Palma and Tenerife has a path length much longer than from LEO satellites to a ground station and serves as a realistic test bed for future quantum communication to space.
The SECOQC quantum key distribution network in Vienna
TLDR
The paper presents the architecture and functionality of the principal networking agent?the SECOQC node module, which enables the authentic classical communication required for key distillation, manages the generated key material, determines a communication path between any destinations in the network, and realizes end-to-end secure transport of key material between these destinations.
A fast and compact quantum random number generator
We present the realization of a physical quantum random number generator based on the process of splitting a beam of photons on a beam splitter, a quantum mechanical source of true randomness. By…
Fisher information and multiparticle entanglement
TLDR
Bounds on F imply that genuine multiparticle entanglement is needed for reaching the highest sensitivities in quantum interferometry, and these criteria detect different sets of states and illustrate their strengths by considering several examples.
High efficiency entangled photon pair collection in type II parametric fluorescence
We report on a method for optimizing the collection of entangled photon pairs in type-II parametric fluorescence. With this technique, we detected 360000 polarization-entangled photon pairs per…
Experimental detection of multipartite entanglement using witness operators.
TLDR
A canonical way of constructing and decomposing witness operators so that they can be directly implemented with present technology is introduced and applied to three- and four-qubit entangled states of polarized photons, giving experimental evidence that the considered states contain true multipartite entanglement.
Multiphoton entanglement and interferometry
Multiphoton interference reveals strictly nonclassical phenomena. Its applications range from fundamental tests of quantum mechanics to photonic quantum information processing, where a significant…
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