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Vacuum-field-induced THz transport gap in a carbon nanotube quantum dot

Author

Listed:
  • F. Valmorra

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • K. Yoshida

    (University of Tokyo)

  • L. C. Contamin

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • S. Messelot

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • S. Massabeau

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • M. R. Delbecq

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • M. C. Dartiailh

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • M. M. Desjardins

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • T. Cubaynes

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • Z. Leghtas

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • K. Hirakawa

    (University of Tokyo)

  • J. Tignon

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • S. Dhillon

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • S. Balibar

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • J. Mangeney

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • A. Cottet

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

  • T. Kontos

    (Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité)

Abstract

The control of light-matter interaction at the most elementary level has become an important resource for quantum technologies. Implementing such interfaces in the THz range remains an outstanding problem. Here, we couple a single electron trapped in a carbon nanotube quantum dot to a THz resonator. The resulting light-matter interaction reaches the deep strong coupling regime that induces a THz energy gap in the carbon nanotube solely by the vacuum fluctuations of the THz resonator. This is directly confirmed by transport measurements. Such a phenomenon which is the exact counterpart of inhibition of spontaneous emission in atomic physics opens the path to the readout of non-classical states of light using electrical current. This would be a particularly useful resource and perspective for THz quantum optics.

Suggested Citation

  • F. Valmorra & K. Yoshida & L. C. Contamin & S. Messelot & S. Massabeau & M. R. Delbecq & M. C. Dartiailh & M. M. Desjardins & T. Cubaynes & Z. Leghtas & K. Hirakawa & J. Tignon & S. Dhillon & S. Balib, 2021. "Vacuum-field-induced THz transport gap in a carbon nanotube quantum dot," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-25733-x
    DOI: 10.1038/s41467-021-25733-x
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