Work

Quantum teleportation and entanglement swapping with linear optics logic gates

Year: 2009

Type: article

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.

Source: New Journal of Physics

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

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

Institutions: Max Planck Institute of Quantum Optics, Ludwig-Maximilians-Universität München, University of Oxford, University of Vienna

Language: English

Topic: Quantum Information and Cryptography

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $919

Funders: European Commission, Deutsche Forschungsgemeinschaft