1. Vacuum-field-induced THz transport gap in a carbon nanotube quantum dot
- Author
-
Audrey Cottet, Matthieu C. Dartiailh, Jérôme Tignon, Takis Kontos, M. M. Desjardins, L. C. Contamin, Matthieu R. Delbecq, Kazushi Yoshida, S. Massabeau, Kazuhiko Hirakawa, Juliette Mangeney, Tino Cubaynes, Zaki Leghtas, Sébastien Balibar, Simon Messelot, Sukhdeep Dhillon, Federico Valmorra, Laboratoire de physique de l'ENS - ENS Paris (LPENS), Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Sorbonne Université (SU)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Institute of Industrial Science (IIS), The University of Tokyo (UTokyo), Physique Mésoscopique, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Sorbonne Université (SU)-École normale supérieure - Paris (ENS Paris), Nano-THz, Centre Automatique et Systèmes (CAS), MINES ParisTech - École nationale supérieure des mines de Paris, Théorie de la Matière Condensée, Laboratoire de physique de l'ENS - ENS Paris (LPENS (UMR_8023)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-École normale supérieure - Paris (ENS Paris)
- Subjects
Photon ,Electronic properties and materials ,Band gap ,Science ,General Physics and Astronomy ,Physics::Optics ,02 engineering and technology ,Carbon nanotube ,7. Clean energy ,01 natural sciences ,General Biochemistry, Genetics and Molecular Biology ,Article ,law.invention ,law ,0103 physical sciences ,Spontaneous emission ,010306 general physics ,Single photons and quantum effects ,Quantum fluctuation ,Physics ,Quantum optics ,[PHYS]Physics [physics] ,Multidisciplinary ,business.industry ,General Chemistry ,021001 nanoscience & nanotechnology ,Carbon nanotube quantum dot ,Quantum technology ,Optoelectronics ,0210 nano-technology ,business - 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., 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.
- Published
- 2021