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
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Dissertation
Frequency combs in the extreme ultraviolet
TL;DR: In this paper, a high-power XUV frequency comb for high precision spectroscopy of the 1s-2s transition in He+ at 61 nm was demonstrated, where the average power around 61 nm (13th harmonic) was close to 1μW (a 105 fold improvement over first generation sources).
Journal ArticleDOI
Quantum feedback amplification
TL;DR: A general theory that enables the quantum amplification to be implemented at a practical level and realizes the minimum-noise amplification even under realistic imperfections is presented.
Journal ArticleDOI
Physics-based control education: energy, dissipation, and structure assignments
Chang Liu,Chang Liu,Lu Dong +2 more
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Control and Systems Approaches to Atomic Force Microscopy
Pranav Agarwal,Murti V. Salapaka +1 more
TL;DR: In this paper, the authors provide a tutorial on the control and systems approaches to AFM and delineate the impact controls and systems perspectives have on AFM related research and indicate future directions.
Cell Wall Nonlinear Elasticity and Growth Dynamics: How Do Bacterial Cells Regulate Pressure and Growth?
TL;DR: Motivated by the quantification of the cell wall growth dynamics, two microscopy and image analysis techniques are developed and applied to broader applications beyond resolving bacterial growth, including tracking single quantum dot to the more general cases of moving objects at high density based on active contour model.
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.