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arXiv · 1107.4774

Benchmarking a Teleportation Protocol realized in Superconducting Circuits

M. Baur·A. Fedorov·L. Steffen·S. Filipp·M. P. da Silva·A. Wallraff
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Abstract

Teleportation of a quantum state may be used for distributing entanglement between distant qubits in quantum communication and for quantum computation. Here we demonstrate the implementation of a teleportation protocol, up to the single-shot measurement step, with superconducting qubits coupled to a microwave resonator. Using full quantum state tomography and evaluating an entanglement witness, we show that the protocol generates a genuine tripartite entangled state of all three-qubits. Calculating the projection of the measured density matrix onto the basis states of two qubits allows us to reconstruct the teleported state. Repeating this procedure for a complete set of input states we find an average output state fidelity of 88%.

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M. Baur, A. Fedorov, L. Steffen, S. Filipp, M. P. da Silva, A. Wallraff. 2011-07-24. Benchmarking a Teleportation Protocol realized in Superconducting Circuits. https://doi.org/10.1103/physrevlett.108.040502

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