دورية أكاديمية
Maxwell’s demon in the quantum-Zeno regime and beyond
العنوان: | Maxwell’s demon in the quantum-Zeno regime and beyond |
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المؤلفون: | G Engelhardt, G Schaller |
المصدر: | New Journal of Physics, Vol 20, Iss 2, p 023011 (2018) |
بيانات النشر: | IOP Publishing, 2018. |
سنة النشر: | 2018 |
المجموعة: | LCC:Science LCC:Physics |
مصطلحات موضوعية: | Maxwell’s demon, quantum-Zeno effect, feedback control, electronic transport, open quantum systems, Science, Physics, QC1-999 |
الوصف: | The long-standing paradigm of Maxwell’s demon is till nowadays a frequently investigated issue, which still provides interesting insights into basic physical questions. Considering a single-electron transistor, where we implement a Maxwell demon by a piecewise-constant feedback protocol, we investigate quantum implications of the Maxwell demon. To this end, we harness a dynamical coarse-graining method, which provides a convenient and accurate description of the system dynamics even for high measurement rates. In doing so, we are able to investigate the Maxwell demon in a quantum-Zeno regime leading to transport blockade. We argue that there is a measurement rate providing an optimal performance. Moreover, we find that besides building up a chemical gradient, there can be also a regime where the feedback loop additionally extracts energy, which results from the energy non-conserving character of the projective measurement. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1367-2630 |
Relation: | https://doaj.org/toc/1367-2630 |
DOI: | 10.1088/1367-2630/aaa38d |
URL الوصول: | https://doaj.org/article/05bda55de478417ea6430fe042c06ba8 |
رقم الأكسشن: | edsdoj.05bda55de478417ea6430fe042c06ba8 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 13672630 |
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DOI: | 10.1088/1367-2630/aaa38d |