The THEORIE group of MPQ laboratory is pioneering a new frontier of condensed matter physics: the control of electronic transport in cavity systems. The group has theoretically shown that the direct current (dc) magnetotransport of a 2D electron gas can be strongly modified when inserted in an electromagnetic cavity resonator even in the absence of illumination.
A work in collaboration with experimental colleagues at ETHZ has just been published in Nature Physics and a detailed theoretical article appeared in Phys. Rev. B a few weeks earlier.
Left: the electron conductivity tensor is controlled by virtual excitation processes involving cavity polaritons. The linear response conductivity is modified even in the absence of illumination.
Right: a sketch of the sample measured in the magnetotransport experiments at ETHZ, an Hall bar inserted in a THz electromagnetic resonator.
Contact:
Cristiano Ciuti (cristiano.ciuti@univ-paris-diderot.fr)
References:
Vacuum-dressed cavity magnetotransport of a two-dimensional electron gas,
Nicola Bartolo and Cristiano Ciuti, Phys. Rev. B 98, 205301 (2018).
Magneto-transport controlled by Landau polariton states, Gian L. Paravicini-Bagliani, Felice Appugliese, Eli Richter, Federico Valmorra, Janine Keller, Mattias Beck, Nicola Bartolo, Clemens Rössler, Thomas Ihn, Klaus Ensslin, Cristiano Ciuti, Giacomo Scalari and Jérôme Faist, Nature Physics 1745-2481 (2018).
À lire aussi
New topology of electron-photon states in cavity quantum materials
The THEORIE team just published in Phys. Rev. Lett. an article on the topological properties of cavity quantum materials. Topological materials exhibit extraordinary properties, thanks to the unique characteristics of their electronic wavefunctions. To grasp this...
QFLM 2022 School at Varenna, Italy
The International School "Quantum Fluids of Light and Matter (QFLM2022)" in Varenna was a great success with many distinguished lecturers and a great audience of students, postdocs and senior researchers.QFLM 2022 was co-organized by Cristiano Ciuti with Alberto...
Cristiano Ciuti elected Fellow of the American Physical Society (APS)
Prof. Cristiano Ciuti, head of the MPQ laboratory, has been elected Fellow of the American Physical Society (APS). Cristiano CiutiHe receives this prestigious recognition “for pioneering theoretical work on the quantum electrodynamics of strongly-coupled photons and...
Cristiano Ciuti winner of the Friedel-Volterra Prize from the SFP and SIF
Prof. Cristiano Ciuti, head of the MPQ laboratory, has been awarded the prestigious Friedel-Volterra Prize from the French and Italian Physical Societies (SFP and SIF), "for his outstanding contributions to light-matter interactions and cavity quantum electrodynamics...