Controlled markov processes and viscosity solutions by W. H. Fleming M. Soner. Springer-Verlag, New York (1993), 428 pp., $ 49.95. ISBN 0-387-97927-1.

The purpose of this paper is to present simple and general algebraic methods for describing series connections in quantum networks. These build on generalize existing (or cascade) by allowing more interfaces, introducing an efficient tool, the product. We also introduce another product, which we call concatenation that useful assembling representing systems without necessarily having connections. show how products can be used describe feedforward feedback A selection examples from control...

This paper provides an introduction to quantum filtering theory. An probability theory is given, focusing on the spectral theorem and conditional expectation as a least squares estimate, culminating in construction of Wiener Poisson processes Fock space. We describe Itô calculus its use modeling physical systems. both reference innovations methods obtain equations for system-probe models from optics.

The purpose of this paper is to formulate and solve a <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">H</i> <sup xmlns:xlink="http://www.w3.org/1999/xlink">infin</sup> controller synthesis problem for class noncommutative linear stochastic systems which includes many examples interest in quantum technology. results on the such commutation relations are preserved (such requirement must be satisfied physical system). A version standard (classical)...

The purpose of this paper is to formulate and solve a H?controller synthesis problem for class non-commutative linear stochastic systems which includes many examples interest in quantum technology. A version standard (classical) dissipativity results are presented from the Strict Bounded Real Lemma derived. This enables two Riccati solution H?control be presented. result leads controllers may realized using purely quantum, classical or mixture elements.

This paper considers a new class of discrete time stochastic uncertain systems in which the uncertainty is described by constraint on relative entropy between nominal noise distribution and perturbed distribution. description natural extension to case systems, sum quadratic description. solves problems worst-case robust performance analysis output feedback minimax optimal controller synthesis general nonlinear setting. Specializing these results linear leads Gaussian (LQG) controller....

Solves a finite-horizon partially observed risk-sensitive stochastic optimal control problem for discrete-time nonlinear systems and obtains small noise risk limits. The limit is interpreted as deterministic dynamic game, new insights into the solution of such game problems are obtained. Both solved using information states, programming, associated separated policies. A certainty equivalence principle also discussed. authors' results have implications robust stabilization problem. standard...

In this article, we report the functionalization of alkyne-terminated alkyl monolayers on Si(100) using "click" chemistry, specifically, Cu(I)-catalyzed Huisgen 1,3-dipolar cycloaddition reaction azides with surface-bound alkynes. Covalently immobilized, structurally well-defined acetylene-terminated organic were prepared from a commercially available terminal diyne species one-step hydrosilylation procedure. Subsequent derivatization in aqueous environments representative azide via...

We investigate the evolution of vertical morphology in a solution-processed P3HT/PCBM "bilayer" organic solar cell using combination techniques, including neutron reflectometry. By correlating device performance with active layer morphology, we establish that solution processed bilayer concept is misnomer and sequential processing an elegant way to make bulk heterojunction cells high efficiency.

Modeling dynamical systems, both for control purposes and to make predictions about their behavior, is ubiquitous in science engineering. Predictive state representations (PSRs) are a recently introduced class of models discrete-time systems. The key idea behind PSRs the closely related OOMs (Jaeger's observable operator models) represent system as set outcomes experiments one can do system. This makes rather different from history-based such nth-order Markov hidden-state-based HMMs POMDPs....

The aim of this paper is to extend linear quantum dynamical network theory include static Bogoliubov components (such as squeezers). Within integrated we provide general methods for cascade or series connections, well feedback interconnections using fractional transformations. In addition, define input-output maps and transfer functions representing describing convergence. We also discuss the underlying group structure in arising from interconnection. Several examples illustrate theory.

The purpose of this paper is to develop a synthesis theory for linear dynamical quantum stochastic systems that are encountered in optics and phenomenological models circuits. In particular, such will enable the systematic realization coherent/fully controllers control, amongst other potential applications. We show how general can be constructed by assembling an appropriate interconnection one degree freedom open harmonic oscillators and, setting, discuss network approximately synthesized or...

The membrane interactions of the antimicrobial peptide aurein 1.2 were studied using a range biophysical techniques to determine location and mechanism action in DMPC (dimyristoylphosphatidylcholine) DMPC/DMPG (dimyristoylphosphatidylglycerol) model membranes that mimic characteristics eukaryotic prokaryotic membranes, respectively. Neutron reflectometry solid-state NMR revealed subtle changes structure caused by peptide. Quartz crystal microbalance with dissipation, vesicle dye leakage...

The purpose of this paper is to extend J.C. Willems' theory dissipative systems open quantum described by noise models. This theory, which combines ideas from physics and control provides useful methods for analysis design systems. We describe the interaction plant a class external systems, called exosystems, in terms feedback networks interconnected Our results include an infinitesimal characterization dissipation property, generalizes well-known Positive Real Bounded Lemmas, used study...

The purpose of this paper is to study and design direct indirect couplings for use in coherent feedback control a class linear quantum stochastic systems. A general physical model nominal system coupled directly indirectly external systems presented. Fundamental properties stability, dissipation, passivity, gain models are presented characterized using complex Lyapunov equations matrix inequalities (LMIs). Coherent $H^\infty$ LQG synthesis methods extended accommodate multistep optimization....

We derive the stochastic master equations, that is to say, quantum filters, and equations for an arbitrary system probed by a continuous-mode bosonic input field in two types of non-classical states. Specifically, we consider cases where state superposition or combination of: (1) single photon wave packet vacuum, (2) any number coherent

A method for constructing observers dynamical systems as asymptotic limits of filters is described. The program carried out in detail linear systems, and addition an observer obtained a class with nonlinear dynamics observations. motivated by some large deviation results Hijab certain conditional measures.

This paper gives a precise meaning to the robustness of risk-sensitive filters for problems in which one is uncertain as exact value probability model. It shown that estimators (including filters) enjoy an error bound sum two terms, first coincides with upper on would obtain if knew exactly underlying model, while second term measure distance between true and design models. The includes discussion several approaches estimation, including H/sub /spl infin// filtering.

Here we report on the functionalization of alkyne-terminated alkyl monolayers highly doped Si(100) using "click" reactions to immobilize ferrocene derivatives. The reaction hydrogen-terminated silicon surfaces with a diyne species was shown afford very robust functional where oxidation underlying substrate negligible. Detailed characterization X-ray photoelectron spectroscopy, reflectometry, and cyclic voltammetry demonstrated that surface acetylenes had reacted in moderate yield give...