Quantum teleportation and entanglement swapping with linear optics logic gates

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 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.

11 pages, 3 figures

References in corpus (9)

• Experimental quantum teleportation
• Silica-on-Silicon Waveguide Quantum Circuits
• Quantum process tomography of a controlled-NOT gate
• High-speed linear optics quantum computing using active feed-forward
• Realization of a photonic CNOT gate sufficient for quantum computation
• Linear Optics C-Phase gate made simple
• Demonstration of a simple entangling optical gate and its use in Bell-state analysis
• Demonstration of an optical quantum controlled-NOT gate without path interference
• Quantum Teleportation with a 3-Bell-state Analyzer

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