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Quantum Information Processing
Erschienen in: Quantum Information Processing 10/2020

01.10.2020

Elementary quantum gates between long-distance qubits mediated by a resonator

verfasst von: Ming-Cui Li, Ai-Xi Chen

Erschienen in: Quantum Information Processing | Ausgabe 10/2020

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Abstract

We propose a scheme to realize Controlled-NOT, Controlled-V, Controlled-\(V^{\dag }\) gate based on the indirect coupling of two qubits which are coupled to a common resonator. Based on the state-of-the-art controllability of longitudinal and transverse coupling between a qubit and a resonator, we let the control qubit couple to the resonator longitudinally and the target qubit couple to the resonator transversely. One can get the fidelity of these gates (as well as the synthesized Toffoli gate) over 99% within effective gate timescales. The proposed gate scheme is possible for the experimental setups where the effective qubit–resonator coupling strength is far bigger than the cavity decay rate and the dephasing rate of the qubits and applicable to quantum circuit synthesizing and long-distance qubit interaction.
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Metadaten
Titel
Elementary quantum gates between long-distance qubits mediated by a resonator
verfasst von
Ming-Cui Li
Ai-Xi Chen
Publikationsdatum
01.10.2020
Verlag
Springer US
Erschienen in
Quantum Information Processing / Ausgabe 10/2020
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-020-02858-4

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