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

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....

Full description

Saved in:
Bibliographic Details
Published in:Nature communications 2021-09, Vol.12 (1), p.5490-5490, Article 5490
Main Authors: Valmorra, F., Yoshida, K., Contamin, L. C., Messelot, S., Massabeau, S., Delbecq, M. R., Dartiailh, M. C., Desjardins, M. M., Cubaynes, T., Leghtas, Z., Hirakawa, K., Tignon, J., Dhillon, S., Balibar, S., Mangeney, J., Cottet, A., Kontos, T.
Format: Article
Language:English
Subjects:
639/766/119/995
639/766/483/3925
Atomic physics
Carbon
Carbon nanotubes
Condensed Matter
Coupling
Electrons
Energy gap
Engineering Sciences
Fluctuations
Humanities and Social Sciences
Interfaces
Materials Science
Micro and nanotechnologies
Microelectronics
multidisciplinary
Optics
Photons
Physics
Quantum dots
Quantum optics
Resonators
Science
Science (multidisciplinary)
Single electrons
Spontaneous emission
Transport phenomena
Vacuum
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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. Strong light-matter coupling has been realized at the level of single atoms and photons throughout most of the electromagnetic spectrum, except for the THz range. Here, the authors report a THz-scale transport gap, induced by vacuum fluctuations in carbon nanotube quantum dot through the deep strong coupling of a single electron to a THz resonator.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-021-25733-x