Journal ArticleDOI
Feedback for physicists: A tutorial essay on control
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TLDR
In this paper, a tutorial essay aims to give enough of the formal elements of control theory to satisfy the experimentalist designing or running a typical physics experiment and enough to satisfy a theorist wishing to understand its broader intellectual context.Abstract:
Feedback and control theory are important ideas that should form part of the education of a physicist but rarely do. This tutorial essay aims to give enough of the formal elements of control theory to satisfy the experimentalist designing or running a typical physics experiment and enough to satisfy the theorist wishing to understand its broader intellectual context. The level is generally simple, although more advanced methods are also introduced. Several types of applications are discussed, as the practical uses of feedback extend far beyond the simple regulation problems where it is most often employed. Sketches are then provided of some of the broader implications and applications of control theory, especially in biology, which are topics of active research.read more
Citations
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Journal ArticleDOI
High mechanical bandwidth fiber-coupled Fabry-Perot cavity
TL;DR: A locking bandwidth of 44 kHz is demonstrated using a simple, compact design that exploits high quality factor and low mode volume resonances in fiber-based optical microcavities and is inherently compatible with vacuum and cryogenic environments.
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Feedback suppression of neural synchrony in two interacting populations by vanishing stimulation.
TL;DR: It is demonstrated that the feedback loop, organized in this way, provides an efficient suppression of collective synchrony in a system of two interacting oscillatory networks, and provides a vanishing-stimulation control.
Journal ArticleDOI
Hidden Markov models for stochastic thermodynamics
TL;DR: In this paper, the authors use the HMM formalism to shed light on a recent discussion of phase transitions in the optimized response of an information engine, for which measurement noise serves as a control parameter.
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Quantum Pyragas control: Selective control of individual photon probabilities
TL;DR: In this paper, a quantum version of the Pyragas protocol is applied to control individual photon probabilities in an otherwise only globally accessible photon-probability distribution of a quantum light emitter.
Journal ArticleDOI
Horizons of cybernetical physics.
TL;DR: The subject and main areas of a new research fieldcybernetical physics are discussed and a brief history of cybernetical Physics is outlined.
References
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Book
Elements of information theory
Thomas M. Cover,Joy A. Thomas +1 more
TL;DR: The author examines the role of entropy, inequality, and randomness in the design of codes and the construction of codes in the rapidly changing environment.
Book
System Identification: Theory for the User
TL;DR: Das Buch behandelt die Systemidentifizierung in dem theoretischen Bereich, der direkte Auswirkungen auf Verstaendnis and praktische Anwendung der verschiedenen Verfahren zur IdentifIZierung hat.
Journal ArticleDOI
Statistical mechanics of complex networks
TL;DR: In this paper, a simple model based on the power-law degree distribution of real networks was proposed, which was able to reproduce the power law degree distribution in real networks and to capture the evolution of networks, not just their static topology.
Journal ArticleDOI
The Structure and Function of Complex Networks
TL;DR: Developments in this field are reviewed, including such concepts as the small-world effect, degree distributions, clustering, network correlations, random graph models, models of network growth and preferential attachment, and dynamical processes taking place on networks.