Comparison of quantization of charge transport in periodic and open pumps

Abstract

We compare the charges transported in two systems, a spatially periodic and an open quantum pump, both depending periodically and adiabatically on time. The charge transported in a cycle was computed by Thouless, respectively by Buttiker et al. in the two cases. We show that the results agree in the limit where the two physical situations become the same, i.e., that of a large open pump.

7 pages

References in corpus (3)

• Resonance approximation and charge loading/unloading in adiabatic quantum pumping
• Quantized charge pumping by surface acoustic waves in ballistic quasi-1D channels
• Quantum charge pumping and electric polarization in Anderson insulators

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