Vacuum-field-induced THz transport gap in a carbon nanotube quantum dot - ParisTech
Journal Articles Nature Communications Year : 2021

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

Simon Messelot
S. Massabeau
  • Function : Author
T. Cubaynes
Jérôme Tignon
Sukhdeep Dhillon
Sebastien Balibar
  • Function : Author
  • PersonId : 828375
Juliette Mangeney

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.
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hal-03375380 , version 1 (10-09-2024)

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F. Valmorra, K. Yoshida, L. Contamin, Simon Messelot, S. Massabeau, et al.. Vacuum-field-induced THz transport gap in a carbon nanotube quantum dot. Nature Communications, 2021, 12 (1), pp.5490. ⟨10.1038/s41467-021-25733-x⟩. ⟨hal-03375380⟩
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