2003/07/28 by Michael Moskalets, M. Moskalets, Μ. Büttiker +1
Physics and Astronomy · #Quantum and electron transport phenomena #Quantum chaos and dynamical systems #Quantum optics and atomic interactions #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.68.161311
published as Phys. Rev. B 68, 161311 (2003) · 4 pages, 2 figures
arxiv created 2003/07/28 · openalex publication_date 2003/10/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We examine adiabatic quantum pumping generated by an oscillating scatterer embedded in a one-dimensional ballistic ring and compare it with pumping caused by the same scatterer connected to external reservoirs. The pumped current for an open conductor, paradoxically, is nonzero even in the limit of vanishing transmission. In contrast, for the ring geometry the pumped current vanishes in the limit of vanishing transmission. We explain this paradoxical result and demonstrate that the physics underlying adiabatic pumping is the same in open and in closed systems.