High-fidelity readout of trapped-ion qubits

We demonstrate single-shot qubit readout with a fidelity sufficient for fault-tolerant quantum computation. For an optical qubit stored in 40Ca+ we achieve 99.991(1)% average readout fidelity in 10^6 trials, using time-resolved photon counting. An adaptive measurement technique allows 99.99% fidelit...

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Main Authors: Myerson, A, Szwer, D, Webster, S, Allcock, D, Curtis, M, Imreh, G, Sherman, J, Stacey, D, Steane, A, Lucas, D
格式: Journal article
语言:English
出版: American Physical Society 2008
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