TOWARDS A QUANTUM PUMP OF ELECTRIC CHARGES

被引:158
作者
NIU, Q
机构
[1] Department of Physics, University of California, Santa Barbara
关键词
D O I
10.1103/PhysRevLett.64.1812
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Here we give a critical examination of the possibility of realizing a quantum pump of electric charges. The physics is based on the theory of quantum adiabatic particle transport initially due to Thouless. We present theoretical guidelines on the experimental conditions for observing this phenomenon. We argue that potentially very accurate quantization of charge transport or electron current can be achieved, once these conditions are approximately satisfied. An example of experimental setup is outlined to demonstrate the practical possibilities. Some comments are also made on the scientific significance of such a quantum device. © 1990 The American Physical Society.
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页码:1812 / 1815
页数:4
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