Quantum teleportation and entanglement swapping with linear optics logic gates

Author(s): C. Schmid, N. Kiesel, U. Weber, R. Ursin, A. Zeilinger, H. Weinfurter

Journal: New Journal of Physics

Volume: 11

Page(s): 033008 (10pp)

Year: 2009

DOI Number: 10.1088/0031-8949/11/3/033008

Link: Link to publication

Abstract:

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 characterized by the 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.

Note: http://arxiv.org/abs/0809.3689

File: Link to PDF

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