2017/03/31 by David Hagenmüller, Johannes Schachenmayer, Stefan Schütz +2 · 6 citations
Physics and Astronomy · #Charge (physics) #Chemical physics #Cold Atom Physics and Bose-Einstein Condensates #Materials science #Physics #Quantum and electron transport phenomena #Quantum mechanics #Strong Light-Matter Interactions #cond-mat.mes-hall #cond-mat.mtrl-sci #quant-ph
paper · pdf · doi:10.1103/physrevlett.119.223601
published as Phys. Rev. Lett. 119, 223601 (2017)
arxiv created 2017/07/01 · openalex publication_date 2017/11/28 · arxiv updated 2017/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We theoretically investigate charge transport through electronic bands of a mesoscopic one-dimensional system, where interband transitions are coupled to a confined cavity mode, initially prepared close to its vacuum. This coupling leads to light-matter hybridization where the dressed fermionic bands interact via absorption and emission of dressed cavity photons. Using a self-consistent nonequilibrium Green's function method, we compute electronic transmissions and cavity photon spectra and demonstrate how light-matter coupling can lead to an enhancement of charge conductivity in the steady state. We find that depending on cavity loss rate, electronic bandwidth, and coupling strength, the dynamics involves either an individual or a collective response of Bloch states, and we explain how this affects the current enhancement. We show that the charge conductivity enhancement can reach orders of magnitudes under experimentally relevant conditions.