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Demonstration of conditional gate operation using superconducting charge qubits

Open access
Yamamoto, T., Pashkin, Yu. A., Astafiev, O., Nakamura, Y., Tsai, J. S.·2003·Nature

Abstract

Following the demonstration of coherent control of the quantum state of a superconducting charge qubit, a variety of qubits based on Josephson junctions have been implemented. Although such solid-state devices are not currently as advanced as microscopic qubits based on nuclear magnetic resonance and ion trap technologies, the potential scalability of the former systems—together with progress in their coherence times and read-out schemes—makes them strong candidates for the building block of a quantum computer. Recently, coherent oscillations and microwave spectroscopy of capacitively coupled superconducting qubits have been reported; the next challenging step towards quantum computation is the realization of logic gates. Here we demonstrate conditional gate operation using a pair of coupled superconducting charge qubits. Using a pulse technique, we prepare different input states and show that their amplitude can be transformed by controlled-NOT (C-NOT) gate operation, although the phase evolution during the gate operation remains to be clarified.

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Crossref · 10.1038/nature02015

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Metadata

Authors
Yamamoto, T., Pashkin, Y. A., Astafiev, O., Nakamura, Y., & Tsai, J. S.
Venue
Nature
Published
2003-10
Volume
425
Issue
6961
Pages
941-944
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1969840935
Cited by
623
References
17
FWCI
61.48
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Demonstration of conditional gate operation using superconducting charge qubits. https://app.cochat.ai/papers/10.1038/nature02015
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Yamamoto, T., Pashkin, Y. A., Astafiev, O., Nakamura, Y., & Tsai, J. S. (2003). Demonstration of conditional gate operation using superconducting charge qubits. Nature. https://doi.org/10.1038/nature02015

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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