2000/10/31 by Y. Levinson, O. Entin‐Wohlman, O. Entin-Wohlman +2 · 81 citations
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Atomic physics #Bound state #Charge (physics) #Condensed matter physics #Line (geometry) #Molecular Junctions and Nanostructures #Physics #Quantization (signal processing) #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Resonance (particle physics) #cond-mat.mes-hall
paper · pdf · doi:10.1016/s0378-4371(01)00451-4
published in Physica A Statistical Mechanics and its Applications 302(1-4), 335-344 (Elsevier BV) · 4 pages, LaTex
arxiv created 2000/10/31 · openalex publication_date 2001/12/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider pumping through a small quantum dot separated from the leads by two point contacts, whose conductances, G1 and G2, serve as pumping parameters. When the dot is pincched, we find that there is a "resonance line" in the parameter plane \G1, G2\ along which the Fermi energy in the leads aligns with the energy of the quasi-bound state in the quantum dot. When G1 and G2 are modulated periodically and adiabatically such that the pumping contour defined by G1=G1(t) and G2=G2(t) encircles the resonance line, the current is quantized: the charge pumped through the dot during each period of the modulation is close to a single electronic charge.