From a feedback-controlled demon to an information ratchet in a double quantum dot.
basic_science · Level V
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- Record sourced from PubMed, PMID 36671120.
- Also identified by DOI 10.1103/PhysRevE.106.064101.
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Abstract
We present a simple strategy for constructing an information ratchet or memory-tape model of Maxwell's demon, from a feedback-controlled model. We illustrate our approach by converting the Annby-Andersson feedback-controlled double quantum dot model [Phys. Rev. B 101, 165404 (2020)2469-995010.1103/PhysRevB.101.165404] to a memory-tape model. We use the underlying network structure of the original model to design a set of bit interaction rules for the information ratchet. The new model is solved analytically in the limit of long interaction times. For finite-time interactions, semianalytical phase diagrams of operational modes are obtained. Stochastic simulations are used to verify theoretical results.
Medical subject headings
- Quantum Dots