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On-Chip Maxwell's Demon as an Information-Powered Refrigerator
J V Koski1, A Kutvonen2, I M Khaymovich1,3
1Low Temperature Laboratory, Department of Applied Physics, Aalto University School of Science, P.O. Box 13500, FI-00076 Aalto, Espoo, Finland.
Physical Review Letters
|January 15, 2016
Summary
We experimentally created an autonomous Maxwell
Area of Science:
- Experimental physics
- Thermodynamics
- Information theory
Background:
- Maxwell's demon is a thought experiment exploring the relationship between information and thermodynamics.
- Extracting microscopic information to reduce entropy has been a long-standing challenge.
- Previous realizations were often not fully autonomous or lacked detailed thermodynamic analysis.
Purpose of the Study:
- To experimentally realize an autonomous Maxwell's demon.
- To analyze the thermodynamics of the demon-system interaction and information exchange.
- To observe the direct thermodynamic consequences of information extraction.
Main Methods:
- Utilized two capacitively coupled single-electron devices integrated on a single electronic circuit.
- Implemented a feedback mechanism for information extraction and entropy reduction.
- Performed detailed thermodynamic analysis of the demon, the system, and their mutual information.
Main Results:
- Demonstrated autonomous operation of Maxwell's demon.
- Observed a direct temperature drop in the system due to information extraction.
- Measured a simultaneous temperature rise in the demon, consistent with the thermodynamic cost of information generation.
Conclusions:
- The experimental setup successfully realized an autonomous Maxwell's demon.
- The findings validate the thermodynamic cost associated with information processing.
- This work provides a platform for studying the interplay between information and thermodynamics at the microscopic level.
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