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Quantum teleportation and entanglement swapping with linear optics logic gates

Schmid, Christian ; Kiesel, Nikolai ; Weber, Ulrich K ; Ursin, Rupert ; Zeilinger, Anton ; Weinfurter, Harald

arXiv.org, 2008-09

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Título:
Quantum teleportation and entanglement swapping with linear optics logic gates
Autor: Schmid, Christian ; Kiesel, Nikolai ; Weber, Ulrich K ; Ursin, Rupert ; Zeilinger, Anton ; Weinfurter, Harald
Assuntos: Bell's inequality ; Logic circuits ; Physics - Quantum Physics ; Quantum entanglement ; Quantum teleportation ; Qubits (quantum computing) ; Tomography
É parte de: arXiv.org, 2008-09
Descrição: We report on the usage of a linear optics phase gate for distinguishing all four Bell states simultaneously in a quantum teleportation and entanglement swapping protocol. This is demonstrated by full state tomography of the one and two qubit output states of the two protocols, yielding average state fidelities of about 0.83 and 0.77, respectively. In addition, the performance of the teleportation channel is characterised by quantum process tomography. The non classical properties of the entanglement swapping output states are further confirmed by the violation of a CHSH-type Bell inequality of 2.14 on average.
Editor: Ithaca: Cornell University Library, arXiv.org
Idioma: Inglês

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