title: Experimental entanglement and nonlocality of a two-photon six-qubit cluster state.
abstract: 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 the linear momentum degrees of freedom. For this state, we demonstrate genuine six-qubit entanglement, persistency of entanglement against the loss of qubits, and higher violation than in previous experiments on Bell inequalities of the Mermin type.
authors.affiliation: Dipartimento di Fisica della Sapienza Università di Roma, Roma 00185, Italy.
authors.forename: Raino
authors.initials: R
authors.lastname: Ceccarelli
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Vallone
authors.forename: Francesco
authors.initials: F
authors.lastname: De Martini
authors.forename: Paolo
authors.initials: P
authors.lastname: Mataloni
authors.forename: Adán
authors.initials: A
authors.lastname: Cabello