2003/02/27 by Michael Moskalets, M. Moskalets, Μ. Büttiker +1 · 1 citation
Chemistry · Computer Science · Mathematics · Physics and Astronomy · #Amplitude #Chemistry #Current (fluid) #Limit (mathematics) #Mathematics #Microwave #Physics #Quantum #Quantum and electron transport phenomena #Quantum electrodynamics #Quantum mechanics #Quantum-Dot Cellular Automata #Ring (chemistry) #Semiconductor Quantum Structures and Devices #Sideband #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.68.075303
published as Phys. Rev. B v.68, 075303 (2003) · 8 pages, 5 figures
arxiv created 2003/02/27 · openalex publication_date 2003/08/05 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Time periodic perturbations of an electron system on a ring are examined. For small frequencies, periodic small amplitude perturbations give rise to sideband currents which, in leading order, are inversely proportional to the frequency. These sideband currents compensate the current of the central band such that to leading order, no net pumped current is generated. In the nonadiabatic limit, larger pump frequencies can lead to resonant excitations: as a consequence, a net pumped current arises. We illustrate our results for a one-channel ring with a quantum dot whose barriers are modulated parametrically.