Optimal Quantum Pumps

J. E. Avron, A. Elgart, G. M. Graf, L. Sadun

Research output: Contribution to journalArticlepeer-review

87 Scopus citations


Adiabatic quantum pumps were analyzed on time scales that are short relative to the cycle of the pump. Energy shift, providing information on dissipation and noise and leading to the characterization of optimal pumps, was introduced as the dual to Wigner's time delay. A general bound on the dissipation in quantum channels was proved which indicated that optimal pumps saturate a bound on dissipation. The study revealed that the integer quantum Hall effect could be interpreted as an optimal pump.

Original languageEnglish
Article number236601
Number of pages4
JournalPhysical Review Letters
Issue number23
StatePublished - 13 Nov 2001
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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