Corrections to “Linear Quantum State Observers”

Design of coherent quantum observers for linear quantum systems

Quantum versions of control problems are often more difficult than their classical counterparts because of the additional constraints imposed by quantum dynamics. For example, the quantum LQG and quantum ∞ H optimal control problems remain open. To make further progress, new, systematic and tractable methods need to be developed. This paper gives three algorithms for designing coherent quantum ...

Stubborn state observers for linear time-invariant systems

For the purpose of estimating the state of a linear time-invariant system with measurements subject to outliers, we propose an observer with a saturated output injection in such a way to mitigate the effect of abnormal and isolated measurement noise on the error dynamics. Stability conditions in both the continuous-time and the discrete-time cases are derived, which ensure global exponential st...

Observers and State Reconstructions for Linear Neutral Time-Delay Systems

Linear Neutral Time-Delay Systems Anna Maria Perdon and Maria Anderlucci DIIGA, Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy (e-mail: [email protected] [email protected]). Abstract The problem of state reconstruction is discussed for linear neutral systems with a finite number of commensurable point delays. Using as models systems with coefficients in a r...

Introduction to Linear and Nonlinear Observers

Quantum Corrections to Noncommutative Solitons

Noncommutative solitons are easier to find in a noncommutative field theory. Similarly, the one-loop quantum corrections to the mass of a noncommutative soliton are easier to compute, in a real scalar theory in 2 + 1 dimensions. We carry out this computation in this paper. We also discuss the model with a double-well potential, and conjecture that there is a partial symmetry restoration in a va...