This work addresses the problem of reachable set-based consensus for positive multiagent systems affected by typical classes bounded disturbances. In presence disturbances, a with positivity preservation is proposed to ensure that state closed-loop system remains while enclosing set defined error an ellipsoidal bounding region. Sufficient conditions are established achieve under energy-bounded or peak-bounded disturbance input. Equivalent design provided, which heuristic algorithm computing...

This paper presents a tripartite quantum teleportation protocol that incorporates feed-forward control and environment-assisted measurement, aiming to suppress the influence of arbitrary noise with at least one reversible Kraus operator. In this protocol, is first utilized before decoherence channel, such entangled qubit transferred target state, which more robust against noise. Next, measurement performed on environment coupled during channel. Finally, reversed redesigned weak reversal...

Electronic sources based upon resonant tunneling diodes (RTDs) usually generate power by establishing limit cycles which exchange energy with storage elements in an external biasing circuit; hence, the output this type of implementation will always be limited extrinsic effects. We verify presence multiple energy-storage mechanisms solely within RTD and characterizes interdependencies necessary to induce intrinsic oscillations observed quantum mechanical simulations. Specifically, we show...

This work addresses the output reachable set-based leader-following consensus problem, focusing on a group of positive agents over directed dwell-time switching networks. Two types non-negative disturbances, namely, 1) L

The coherent robust control problem for a class of linear quantum passive systems with model uncertainties is considered in this study, where both the plant and controller are described by stochastic differential equations (QSDEs). In framework language, translated into Hamiltonian, coupling operators, scattering matrices. Based on bounded real lemma, design original uncertain transformed new scaled system without uncertainties. Further, latter solving couple Riccati therefore numerical...

For high-dimensional closed quantum systems, this paper proposes a novel Lyapunov control scheme based on the particle swarm optimization algorithm and achieves high-probability population transfer of system to non-isolated target eigenstate in LaSalle invariant set under usual smooth laws. Via quadratic function with unknown parameters, law parameters is designed; invariance principle energy-level connectivity graph, stability analyzed; by using algorithm, optimal obtained achieve goal. In...

The dynamic conductivity of electrons in a tunneling superlattice is determined here using linear-response theory. elastic-impurity-scattering rate shown to be generally different for transport along differing directions. In addition, we calculate localization corrections the conductivity, which demonstrate that its scaling behavior may either two dimensional (2D) or 3D, depending upon miniband width. this, 3D changes 2D as width becomes vanishingly small.

Dielectric response and plasma excitations of a multiwire superlattice consisting quantum wires (along z axis) periodically repeated in both the x y directions are investigated. The wells considered to be separated by barriers finite height, with consequent tunneling through potential which we treat employing tight-binding-type envelope wave functions. intraminiband electron density-density correlation function is derived, its normal modes (plasmons) examined for various barrier heights.

Four intelligent optimization algorithms are compared by searching for control pulses to achieve the preparation of target quantum states closed and open systems, which include differential evolution (DE), particle swarm (PSO), quantum-behaved (QPSO), evolutionary algorithm (QEA). We compare their performance point out differences. By sampling learning uncertain robustness found these four is also demonstrated compared. The resulting research shows that QPSO nearly outperforms other three...

Quantum metrology provides a fundamental limit on the precision of multi-parameter estimation, called Heisenberg limit, which has been achieved in noiseless quantum systems. However, for systems subject to noises, it is hard achieve this since noises are inclined destroy coherence and entanglement. In paper, combined control scheme with feedback error correction (QEC) proposed presence spontaneous emission, where used protect stabilizer code space containing an optimal probe state additional...

In this paper, we consider the real-time parameter estimation problem for a ZZ-coupled system composed of two qubits in presence spontaneous emission. To enhance precision coupling coefficient, first propose different control strategies, where one is feedback based on quantum-jump detection, and second hybrid combining Markovian Hamiltonian control. The simulation results show that compared with free evolution, both strategies can improve extend coherence time. Then, basis practical...

In this paper, we consider the real-time parameter estimation problem for a ZZ-coupled system composed of two qubits in presence spontaneous emission. To enhance precision coupling coefficient, first propose different control schemes, where one is feedback based on quantum-jump detection, and second hybrid combining Markovian Hamiltonian control. The simulation results show that compared with free evolution, both schemes can improve extend coherence time. Next, basis practical...

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This paper investigates stability issues related to linear discrete-time cone-preserving systems with time-varying delays. The study begins by examining the monotonicity of cone invariance. Equivalent asymptotic conditions for delays are then provided based on and comparison principle. results indicate that time do not affect stability. Furthermore, α-exponential is analyzed characterize decay rate system. Finally, a numerical example presented illustrate theoretical findings. These...

We analyze the high-frequency dynamic conductivity of a tunneling GaAs/${\mathrm{Al}}_{\mathrm{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathrm{x}}$As superlattice using memory-function technique. Considering relatively small wave-function overlap between adjacent quantum wells in tight-binding approximation, we examine plasmon resonance structure ac for transport parallel to quantum-well planes. Employing random-phase-approximation density-density correlation function superlattice, find...

The bounded stability problem of linear mixed quantum-classical feedback control systems with time delays is investigated in this paper. whole system composed a quantum plant, classical controller, and some interconnection devices. Two classes the loop are considered: constant time-varying delays. closed-loop under these two analyzed by constructing different Lyapunov-Krasovskii functions corresponding criteria derived, respectively. In particular, weighting matrix introduced into analysis...