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Probing spin-electric transitions in a molecular exchange qubit

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Listed:
  • Florian Mardelé

    (25 rue des Martyrs)

  • Ivan Mohelský

    (25 rue des Martyrs)

  • Jan Wyzula

    (25 rue des Martyrs
    Paul Scherrer Institute)

  • Milan Orlita

    (25 rue des Martyrs
    Ke Karlovu 5)

  • Philippe Turek
  • Filippo Troiani
  • Athanassios K. Boudalis

Abstract

Electric fields represent an ideal means for controlling spins at the nanoscale and, more specifically, for manipulating protected degrees of freedom in multispin systems. Here we perform low-temperature magnetic far-IR spectroscopy on a molecular spin triangle (Fe3) and provide initial experimental evidence suggesting spin-electric transitions in polynuclear complexes. The co-presence of electric- and magnetic-dipole transitions, allows us to estimate the spin-electric coupling. Based on spin Hamiltonian simulations of the spectra, we identify the observed transitions and introduce the concept of a generalized exchange qubit. This applies to a wide class of molecular spin triangles, and includes the scalar chirality and the partial spin sum qubits as special cases.

Suggested Citation

  • Florian Mardelé & Ivan Mohelský & Jan Wyzula & Milan Orlita & Philippe Turek & Filippo Troiani & Athanassios K. Boudalis, 2025. "Probing spin-electric transitions in a molecular exchange qubit," Nature Communications, Nature, vol. 16(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-56453-1
    DOI: 10.1038/s41467-025-56453-1
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