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Patrick Potts

Postdoctoral fellow

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Detailed Fluctuation Relation for Arbitrary Measurement and Feedback Schemes

Author

  • Patrick P. Potts
  • Peter Samuelsson

Summary, in English

Fluctuation relations are powerful equalities that hold far from equilibrium. However, the standard approach to include measurement and feedback schemes may become inapplicable in certain situations, including continuous measurements, precise measurements of continuous variables, and feedback induced irreversibility. Here we overcome these shortcomings by providing a recipe for producing detailed fluctuation relations. Based on this recipe, we derive a fluctuation relation which holds for arbitrary measurement and feedback control. The key insight is that fluctuations inferable from the measurement outcomes may be suppressed by postselection. Our detailed fluctuation relation results in a stringent and experimentally accessible inequality on the extractable work, which is saturated when the full entropy production is inferable from the data.

Department/s

  • NanoLund
  • Mathematical Physics

Publishing year

2018-11-21

Language

English

Publication/Series

Physical Review Letters

Volume

121

Issue

21

Document type

Journal article

Publisher

American Physical Society

Topic

  • Other Physics Topics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0031-9007