# IEEE Transactions on Automatic Control

## Filter Results

Displaying Results 1 - 25 of 38

Publication Year: 2012, Page(s):C1 - C4
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• ### IEEE Transactions on Automatic Control publication information

Publication Year: 2012, Page(s): C2
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• ### Guest Editorial: Special Issue on Control of Quantum Mechanical Systems

Publication Year: 2012, Page(s):1893 - 1895
Cited by:  Papers (1)
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• ### Scanning the issue

Publication Year: 2012, Page(s):1896 - 1897
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• ### Modeling and Control of Quantum Systems: An Introduction

Publication Year: 2012, Page(s):1898 - 1917
Cited by:  Papers (82)
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The scope of this work is to provide a self-contained introduction to a selection of basic theoretical aspects in the modeling and control of quantum mechanical systems, as well as a brief survey on the main approaches to control synthesis. While part of the existing theory, especially in the open-loop setting, stems directly from classical control theory (most notably geometric control and optima... View full abstract»

• ### Stabilization of a Delayed Quantum System: The Photon Box Case-Study

Publication Year: 2012, Page(s):1918 - 1930
Cited by:  Papers (7)
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A feedback scheme, stabilizing an arbitrary photon-number state in a microwave cavity, is analyzed. The quantum non-demolition measurement of the cavity state allows in open-loop a non-deterministic preparation of photon-number states. By the mean of a controlled classical field injection, this preparation process is made deterministic. The system evolves through a discrete-time Markov process and... View full abstract»

• ### Hamiltonian Control of Quantum Dynamical Semigroups: Stabilization and Convergence Speed

Publication Year: 2012, Page(s):1931 - 1944
Cited by:  Papers (13)
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We consider finite-dimensional Markovian open quantum systems, and characterize the extent to which time-independent Hamiltonian control may allow to stabilize a target quantum state or subspace and optimize the resulting convergence speed. For a generic Lindblad master equation, we introduce a dissipation-induced decomposition of the associated Hilbert space, and show how it serves both as a tool... View full abstract»

• ### Symmetry and Subspace Controllability for Spin Networks With a Single-Node Control

Publication Year: 2012, Page(s):1945 - 1956
Cited by:  Papers (10)
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We consider the relation of symmetries and subspace controllability for spin-1/2 networks with XXZ couplings, subject to perturbation of a single node by a local potential (Z-control). The Hamiltonians for such networks decompose into excitation subspaces. Focusing on the single excitation subspace, it is shown for single-node Z-controls that external symmetries are characterized by eigenstates of... View full abstract»

• ### Geometric Optimal Control of the Contrast Imaging Problem in Nuclear Magnetic Resonance

Publication Year: 2012, Page(s):1957 - 1969
Cited by:  Papers (19)
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The objective of this article is to introduce the tools to analyze the contrast imaging problem in Nuclear Magnetic Resonance. Optimal trajectories can be selected among extremal solutions of the Pontryagin Maximum Principle applied to this Mayer type optimal problem. Such trajectories are associated to the question of extremizing the transfer time. Hence the optimal problem is reduced to the anal... View full abstract»

• ### Adiabatic Control of the Schrödinger Equation via Conical Intersections of the Eigenvalues

Publication Year: 2012, Page(s):1970 - 1983
Cited by:  Papers (13)
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In this paper, we present a constructive method to control the bilinear Schrödinger equation via two controls. The method is based on adiabatic techniques and works if the spectrum of the Hamiltonian admits eigenvalue intersections, and if the latter are conical (as it happens generically). In this framework, we are able to spread on several levels connected by conical intersections a stat... View full abstract»

• ### Controllability Aspects of Quantum Dynamics:A Unified Approach for Closed and Open Systems

Publication Year: 2012, Page(s):1984 - 1996
Cited by:  Papers (9)
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Knowledge about to what extent quantum dynamical systems can be steered by coherent controls is indispensable for future developments in quantum technology. The purpose of this paper is to analyze such controllability aspects for finite dimensional bilinear quantum control systems. We use a unified approach based on Lie-algebraic methods from nonlinear control theory to revisit known and to establ... View full abstract»

• ### Quantum Coherent Nonlinear Feedback With Applications to Quantum Optics on Chip

Publication Year: 2012, Page(s):1997 - 2008
Cited by:  Papers (29)
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In the control of classical mechanical systems, feedback has been applied to the generation of desired nonlinear dynamics, e.g., in chaos control. However, how much this can be done is still an open problem in quantum mechanical systems. This paper presents a scheme of enhancing nonlinear quantum effects via the recently developed coherent feedback techniques, which can be shown to outperform the ... View full abstract»

• ### Indirect Controllability of Quantum Systems; A Study of Two Interacting Quantum Bits

Publication Year: 2012, Page(s):2009 - 2020
Cited by:  Papers (9)
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A quantum mechanical system S is indirectly controlled when the control affects an ancillary system A and the evolution of S is modified through the interaction with A only. A study of indirect controllability gives a description of the set of states that can be obtained for S with this scheme. In this paper, we study the indirect controllability of quantum systems in the finite dimensional case. ... View full abstract»

• ### Optimal Control of Inhomogeneous Ensembles

Publication Year: 2012, Page(s):2021 - 2032
Cited by:  Papers (21)
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Inhomogeneity, in its many forms, appears frequently in practical physical systems. Readily apparent in quantum systems, inhomogeneity is caused by hardware imperfections, measurement inaccuracies, and environmental variations, and subsequently limits the performance and efficiency achievable in current experiments. In this paper, we provide a systematic methodology to mathematically characterize ... View full abstract»

• ### A Frequency Domain Condition for the Physical Realizability of Linear Quantum Systems

Publication Year: 2012, Page(s):2033 - 2044
Cited by:  Papers (28)
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A recently emerging approach to the feedback control of linear quantum systems involves the use of a controller which itself is a quantum linear system. This approach to quantum feedback control, referred to as coherent quantum feedback control, has the advantage that it does not destroy quantum information, is fast, and has the potential for efficient implementation. An important issue which aris... View full abstract»

• ### Experimental Demonstration of Coherent Feedback Control on Optical Field Squeezing

Publication Year: 2012, Page(s):2045 - 2050
Cited by:  Papers (47)
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Coherent feedback is a non-measurement based, hence a back-action free, method of control for quantum systems. A typical application of this control scheme is squeezing enhancement, a purely non-classical effect in quantum optics. In this technical note we report its first experimental demonstration that well agrees with the theory taking into account time delays and losses in the coherent feedbac... View full abstract»

• ### Illustrating the Geometry of Coherently Controlled Unital Open Quantum Systems

Publication Year: 2012, Page(s):2050 - 2056
Cited by:  Papers (8)
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We extend standard Markovian open quantum systems (quantum channels) by allowing for Hamiltonian controls and elucidate their geometry in terms of Lie semigroups. For standard dissipative interactions with the environment and different coherent controls, we particularly specify the tangent cones (Lie wedges) of the respective Lie semigroups of quantum channels. These cones are the counterpart of t... View full abstract»

• ### Convex Optimization-Based Parameter Estimation and Experiment Design for Pauli Channels

Publication Year: 2012, Page(s):2056 - 2061
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In this technical note, we study the problem of parameter estimation for quantum channels, which are (completely positive) maps acting on quantum states. We focus on an important subclass of channels called Pauli channels which are characterized by a certain set of vectors (directions) and a number of scalar parameters. For the case where the directions are known, a special parametrization turns t... View full abstract»

• ### Employing Kronecker Canonical Form for LMI-Based $H_{infty}$ Synthesis Problems

Publication Year: 2012, Page(s):2062 - 2067
Cited by:  Papers (1)
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The Kronecker canonical form (KCF) can be employed when solving H∞ synthesis problem. The KCF structure reveals variables that can be eliminated in the semidefinite program that defines the controller. The structure can also be used to remove states in the controller without sacrificing performance. In order to find the KCF structure, we can transform the relevant matrices to a g... View full abstract»

• ### Distributed Source Identification for Wave Equations: An Offline Observer-Based Approach

Publication Year: 2012, Page(s):2067 - 2073
Cited by:  Papers (3)
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In this paper, we consider the 1-D wave equation where the spatial domain is a bounded interval. Assuming the initial conditions to be known, we are here interested in identifying an unknown source term, while we take the Neumann derivative of the solution on one of the boundaries as the measurement output. Applying a back-and-forth iterative scheme and constructing well-chosen observers (that wil... View full abstract»

• ### A New Approach for Upper Bound Estimations of the Solution of the Continuous Riccati Equation

Publication Year: 2012, Page(s):2074 - 2077
Cited by:  Papers (1)
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By utilizing some linear algebraic techniques, a new approach for measuring upper bounds of the solution of the continuous algebraic Riccati equation (CARE) is developed. Two upper matrix bounds are developed. Comparing with those appeared in the literature, the obtained bounds are less restrictive or more concise. Therefore, they can be applied easily to deal with control problems. View full abstract»

• ### Sequential Bayesian Prediction and Adaptive Sampling Algorithms for Mobile Sensor Networks

Publication Year: 2012, Page(s):2078 - 2084
Cited by:  Papers (10)
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In this technical note, we formulate a fully Bayesian approach for spatio-temporal Gaussian process regression such that multifactorial effects of observations, measurement noise and prior distributions are all correctly incorporated in the predictive distribution. Using discrete prior probabilities and compactly supported kernels, we provide a way to design sequential Bayesian prediction algorith... View full abstract»

• ### Consensusability of Discrete-Time Dynamic Multiagent Systems

Publication Year: 2012, Page(s):2085 - 2089
Cited by:  Papers (40)
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This technical note investigates the problems when the discrete-time multiagent dynamic systems are consensusable, and how to synthesize the consensus feedback control law when the consensusability condition holds. We focus on multiagent systems (MASs) over the undirected graph of the communication topology and derive the consensusability condition for single-input dynamic agent systems under stat... View full abstract»

• ### Sensitivity Reduction by Strongly Stabilizing Controllers for MIMO Distributed Parameter Systems

Publication Year: 2012, Page(s):2089 - 2094
Cited by:  Papers (7)
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This note investigates a sensitivity reduction problem by stable stabilizing controllers for a linear time-invariant multi-input multioutput distributed parameter system. The plant we consider has finitely many unstable zeros, which are simple and blocking, but can possess infinitely many unstable poles. We obtain a necessary condition and a sufficient condition for the solvability of the problem,... View full abstract»

• ### Sensor-Based Globally Asymptotically Stable Filters for Attitude Estimation: Analysis, Design, and Performance Evaluation

Publication Year: 2012, Page(s):2095 - 2100
Cited by:  Papers (34)
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This technical note presents the design, analysis, and performance evaluation of a novel globally asymptotically stable (GAS) filter for attitude estimation. The design is sensor-driven and departs from traditional solutions as no explicit representations of the attitude are considered. The proposed solution yields unique estimates and it does not suffer from drawbacks such as singularities, topol... View full abstract»

## Aims & Scope

In the IEEE Transactions on Automatic Control, the IEEE Control Systems Society publishes high-quality papers on the theory, design, and applications of control engineering.  Two types of contributions are regularly considered

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
P. J. Antsaklis
Dept. Electrical Engineering
University of Notre Dame