2021/03/31 by Elvia Colella, Arkadiusz Kosior, Farokh Mivehvar +1 · 1 citation
Computer Science · Physics and Astronomy · #Classical mechanics #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Faraday cage #Magnetic field #Mechanical and Optical Resonators #Photon #Physics #Quantum #Quantum Information and Cryptography #Quantum electrodynamics #Quantum mechanics #cond-mat.quant-gas #quant-ph
paper · pdf · doi:10.1103/physrevlett.128.070603
published in Physical Review Letters 128(7), 070603 (American Physical Society) · 12 pages, 5 figures
arxiv created 2022/02/02 · openalex publication_date 2022/02/17 · arxiv updated 2022/03/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We propose a novel type of a Bose-Hubbard ladder model based on an open quantum-gas--cavity-QED setup to study the physics of dynamical gauge potentials. Atomic tunneling along opposite directions in the two legs of the ladder is mediated by photon scattering from transverse pump lasers to two distinct cavity modes. The resulting interplay between cavity photon dissipation and the optomechanical atomic back-action then induces an average-density-dependent dynamical gauge field. The dissipation-stabilized steady-state atomic motion along the legs of the ladder leads either to a pure chiral current, screening the induced dynamical magnetic field as in the Meissner effect, or generates simultaneously chiral and particle currents. For sufficiently strong pump the system enters into a dynamically unstable regime exhibiting limit-cycle and period-doubled oscillations. Intriguingly, an electromotive force is induced in this dynamical regime as expected from an interpretation based on Faraday's law of induction for the time-dependent synthetic magnetic flux.