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A modular design of molecular qubits to implement universal quantum gates

Author

Listed:
  • Jesús Ferrando-Soria

    (School of Chemistry and Photon Science Institute, The University of Manchester)

  • Eufemio Moreno Pineda

    (School of Chemistry and Photon Science Institute, The University of Manchester)

  • Alessandro Chiesa

    (Università di Parma)

  • Antonio Fernandez

    (School of Chemistry and Photon Science Institute, The University of Manchester)

  • Samantha A. Magee

    (School of Chemistry and Photon Science Institute, The University of Manchester)

  • Stefano Carretta

    (Università di Parma)

  • Paolo Santini

    (Università di Parma)

  • Iñigo J. Vitorica-Yrezabal

    (School of Chemistry and Photon Science Institute, The University of Manchester)

  • Floriana Tuna

    (School of Chemistry and Photon Science Institute, The University of Manchester)

  • Grigore A. Timco

    (School of Chemistry and Photon Science Institute, The University of Manchester)

  • Eric J.L. McInnes

    (School of Chemistry and Photon Science Institute, The University of Manchester)

  • Richard E.P. Winpenny

    (School of Chemistry and Photon Science Institute, The University of Manchester)

Abstract

The physical implementation of quantum information processing relies on individual modules—qubits—and operations that modify such modules either individually or in groups—quantum gates. Two examples of gates that entangle pairs of qubits are the controlled NOT-gate (CNOT) gate, which flips the state of one qubit depending on the state of another, and the gate that brings a two-qubit product state into a superposition involving partially swapping the qubit states. Here we show that through supramolecular chemistry a single simple module, molecular {Cr7Ni} rings, which act as the qubits, can be assembled into structures suitable for either the CNOT or gate by choice of linker, and we characterize these structures by electron spin resonance spectroscopy. We introduce two schemes for implementing such gates with these supramolecular assemblies and perform detailed simulations, based on the measured parameters including decoherence, to demonstrate how the gates would operate.

Suggested Citation

  • Jesús Ferrando-Soria & Eufemio Moreno Pineda & Alessandro Chiesa & Antonio Fernandez & Samantha A. Magee & Stefano Carretta & Paolo Santini & Iñigo J. Vitorica-Yrezabal & Floriana Tuna & Grigore A. Ti, 2016. "A modular design of molecular qubits to implement universal quantum gates," Nature Communications, Nature, vol. 7(1), pages 1-10, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11377
    DOI: 10.1038/ncomms11377
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    Cited by:

    1. Tolulope Michael Ajayi & Vijay Singh & Kyaw Zin Latt & Sanjoy Sarkar & Xinyue Cheng & Sineth Premarathna & Naveen K. Dandu & Shaoze Wang & Fahimeh Movahedifar & Sarah Wieghold & Nozomi Shirato & Volke, 2022. "Atomically precise control of rotational dynamics in charged rare-earth complexes on a metal surface," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. E. Garlatti & A. Albino & S. Chicco & V. H. A. Nguyen & F. Santanni & L. Paolasini & C. Mazzoli & R. Caciuffo & F. Totti & P. Santini & R. Sessoli & A. Lunghi & S. Carretta, 2023. "The critical role of ultra-low-energy vibrations in the relaxation dynamics of molecular qubits," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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