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Experimental teleportation of quantum entanglement with an optimal linear optics Bell-state analyzer
Thomas Jennewein, Rupert Ursin, Markus Aspelmeyer +1
We demonstrate an experiment on entanglement swapping using an optimal Bell-state measurement capable of identifying two of the four Bell-states for polarization entangled photons,…
Exploiting the randomness of the measurement basis in quantum cryptography: Secure Quantum Key Growing without Privacy Amplification
Hannes R. Böhm, Paul S. Böhm, Markus Aspelmeyer +2
We suggest that the randomness of the choices of measurement basis by Alice and Bob provides an additional important resource for quantum cryptography. As a specific application, w…
Space-to-ground quantum-communication using an optical ground station: a feasibility study
P. Villoresi, F. Tamburini, M. Aspelmeyer +6
We have tested the experimental prerequisites for a Space-to-Ground quantum communication link between satellites and an optical ground station. The feasibility of our ideas is bei…
Complementarity and Information in "Delayed-choice for entanglement swapping"
Caslav Brukner, Markus Aspelmeyer, Anton Zeilinger
Building on Peres's idea of "Delayed-choice for extanglement swapping" we show that even the degree to which quantum systems were entangled can be defined after they have been regi…
Nonlocality of cluster states of qubits
Valerio Scarani, Antonio Acin, Emmanuel Schenck +1
We investigate cluster states of qubits with respect to their non-local properties. We demonstrate that a Greenberger-Horne-Zeilinger (GHZ) argument holds for any cluster state: mo…