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Wenner, J.; Yin, Yi; Chen, Yu; Barends, R.; Chiaro, B.; Jeffrey, E.; Kelly, J.; Megrant, A.; Mutus, J. Y.; Neill, C.; O’Malley, P. J. J.; Roushan, P.; Sank, D.; Vainsencher, A.; White, T. C.; Korotkov, Alexander N.; Cleland, A. N.; Martinis, John M.
Physical review letters, 05/2014, Letnik: 112, Številka: 21Journal Article
We demonstrate a high-efficiency deterministic quantum receiver to convert flying qubits to stationary qubits. We employ a superconducting resonator, which is driven with a shaped pulse through an adjustable coupler. For the ideal "time-reversed" shape, we measure absorption and receiver fidelities at the single microwave photon level of, respectively, 99.41% and 97.4%. These fidelities are comparable with gates and measurement and exceed the deterministic quantum communication and computation fault-tolerant thresholds, enabling new designs of deterministic qubit interconnects and hybrid quantum computers.
