423 citations
- Centre National de la Recherche ScientifiqueFR14 papers
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22 papers · 1 filter
State-independent quantum contextuality with single photons
Elias Amselem, Magnus Radmark, Mohamed Bourennane +1
We present an experimental state-independent violation of an inequality for noncontextual theories on single particles. We show that 20 different single-photon states violate an in…
Experimental Entanglement and Nonlocality of a Two-Photon Six-Qubit Cluster State
Raino Ceccarelli, Giuseppe Vallone, Francesco De Martini +2
We create a six-qubit linear cluster state by transforming a two-photon hyperentangled state in which three qubits are encoded in each particle, one in the polarization and two in…
State-independent experimental test of quantum contextuality
G. Kirchmair, F. Zähringer, R. Gerritsma +5
The question of whether quantum phenomena can be explained by classical models with hidden variables is the subject of a long lasting debate. In 1964, Bell showed that certain type…
Experimental test of quantum contextuality in neutron interferometry
H. Bartosik, J. Klepp, C. Schmitzer +4
We performed an experimental test of the Kochen-Specker theorem based on an inequality derived from the Peres-Mermin proof, using spin-path (momentum) entanglement in a single neut…
Compact set of invariants characterizing graph states of up to eight qubits
Adan Cabello, Antonio J. Lopez-Tarrida, Pilar Moreno +1
The set of entanglement measures proposed by Hein, Eisert, and Briegel for n-qubit graph states [Phys. Rev. A 69, 062311 (2004)] fails to distinguish between inequivalent classes u…
Addendum to "Experimental demonstration of a quantum protocol for Byzantine agreement and liar detection" arXiv:0710.0290
Sascha Gaertner, Mohamed Bourennane, Christian Kurtsiefer +2
Gao et al. [Phys. Rev. Lett. 101, 208901 (2008)] have described a possible intercept-resend attack for the quantum protocol for detectable Byzantine agreement in Phys. Rev. Lett. 1…