دورية أكاديمية
Harvesting entropy and quantifying the transition from noise to chaos in a photon-counting feedback loop.
| العنوان: | Harvesting entropy and quantifying the transition from noise to chaos in a photon-counting feedback loop. |
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| المؤلفون: | Hagerstrom AM; Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742; Department of Physics, University of Maryland, College Park, MD 20742; aaron.hagerstrom@gmail.com., Murphy TE; Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742; Department of Electrical and Computer Engineering, University of Maryland, College Park, MD 20742;, Roy R; Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742; Department of Physics, University of Maryland, College Park, MD 20742; Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742. |
| المصدر: | Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2015 Jul 28; Vol. 112 (30), pp. 9258-63. Date of Electronic Publication: 2015 Jul 14. |
| نوع المنشور: | Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
| اللغة: | English |
| بيانات الدورية: | Publisher: National Academy of Sciences Country of Publication: United States NLM ID: 7505876 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1091-6490 (Electronic) Linking ISSN: 00278424 NLM ISO Abbreviation: Proc Natl Acad Sci U S A Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Original Publication: Washington, DC : National Academy of Sciences |
| مستخلص: | Many physical processes, including the intensity fluctuations of a chaotic laser, the detection of single photons, and the Brownian motion of a microscopic particle in a fluid are unpredictable, at least on long timescales. This unpredictability can be due to a variety of physical mechanisms, but it is quantified by an entropy rate. This rate, which describes how quickly a system produces new and random information, is fundamentally important in statistical mechanics and practically important for random number generation. We experimentally study entropy generation and the emergence of deterministic chaotic dynamics from discrete noise in a system that applies feedback to a weak optical signal at the single-photon level. We show that the dynamics transition from shot noise to chaos as the photon rate increases and that the entropy rate can reflect either the deterministic or noisy aspects of the system depending on the sampling rate and resolution. |
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| فهرسة مساهمة: | Keywords: chaos; entropy; nonlinear dynamics; photon counting; statistical physics |
| تواريخ الأحداث: | Date Created: 20150716 Date Completed: 20151008 Latest Revision: 20181113 |
| رمز التحديث: | 20231215 |
| مُعرف محوري في PubMed: | PMC4522765 |
| DOI: | 10.1073/pnas.1506600112 |
| PMID: | 26175023 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1091-6490 |
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| DOI: | 10.1073/pnas.1506600112 |