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Patrick Potts

Postdoctoral fellow

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Maxwell's demon in a double quantum dot with continuous charge detection

Author

  • Björn Annby-Andersson
  • Peter Samuelsson
  • Ville F. Maisi
  • Patrick P. Potts

Summary, in English

Converting information into work has, during the past decade, gained renewed interest as it gives insight into the relation between information theory and thermodynamics. Here, we theoretically investigate an implementation of Maxwell's demon in a double quantum dot and demonstrate how heat can be converted into work using only information. This is accomplished by continuously monitoring the charge state of the quantum dots and transferring electrons against a voltage bias using a feedback scheme. We investigate the electrical work produced by the demon and find a non-Gaussian work distribution. To illustrate the effect of a realistic charge detection scheme, we develop a model taking into account noise as well as a finite delay time and show that an experimental realization is feasible with present day technology. Depending on the accuracy of the measurement, the system is operated as an implementation of Maxwell's demon or a single-electron pump.

Department/s

  • NanoLund
  • Mathematical Physics
  • Solid State Physics

Publishing year

2020-04-06

Language

English

Publication/Series

Physical Review B

Volume

101

Issue

16

Document type

Journal article

Publisher

American Physical Society

Topic

  • Atom and Molecular Physics and Optics
  • Control Engineering

Status

Published

ISBN/ISSN/Other

  • ISSN: 2469-9950