Characterization of a two-transmon processor with individual single-shot qubit readout

Characterization of a two-transmon processor with individual single-shot qubit readout

We report the characterization of a two-qubit processor implemented with two capacitively coupled tunable superconducting qubits of the transmon type, each qubit having its own nondestructive single-shot readout. The fixed capacitive coupling yields the sqrt[iSWAP] two-qubit gate for a suitable inte...

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Veröffentlicht in:Physical review letters 2012-02, Vol.108 (5), p.057002-057002, Article 057002
Hauptverfasser: Dewes, A, Ong, F R, Schmitt, V, Lauro, R, Boulant, N, Bertet, P, Vion, D, Esteve, D
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container_issue 5
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container_title Physical review letters
container_volume 108
creator Dewes, A
Ong, F R
Schmitt, V
Lauro, R
Boulant, N
Bertet, P
Vion, D
Esteve, D
description We report the characterization of a two-qubit processor implemented with two capacitively coupled tunable superconducting qubits of the transmon type, each qubit having its own nondestructive single-shot readout. The fixed capacitive coupling yields the sqrt[iSWAP] two-qubit gate for a suitable interaction time. We reconstruct by state tomography the coherent dynamics of the two-bit register as a function of the interaction time, observe a violation of the Bell inequality by 22 standard deviations after correcting readout errors, and measure by quantum process tomography a gate fidelity of 90%.
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title Characterization of a two-transmon processor with individual single-shot qubit readout
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