Quantum dynamics of measurements in terms of inter-qubit distances with a collective damping. (December 2019)

• Record Type: Journal Article
• Authors: Berrada, K.
• Is Part Of: Solid state communications. Volume 303/304(2019)
• Publication Date: 2019-12
• Subjects: A. Materials physics -- B. Qubit systems -- C. Parameter estimation and squeezing entropy -- D. Dipole-dipole interaction; Solid state chemistry -- Periodicals; Solid state physics -- Periodicals; Chimie de l'état solide -- Périodiques; Physique de l'état solide -- Périodiques; 530.41
• DOI: 10.1016/j.ssc.2019.113726
• Languages: English
• ISSNs: 0038-1098

Abstract

Abstract: We examine the influence of inter-qubit distances and reservoir temperature on the dynamics of the parameter estimation for the qubit systems considering the interaction of dipole-dipole and collective damping effect. We find that the dynamical behaviour and preservation of the parameter estimation-precision is greatly dependent on the qubits distances and the temperature of the reservoir. Moreover, we study the effect of the qubits-distance and temperature of the reservoir on the dynamics of the fidelity and squeezing entropy for atomic systems. The obtained results show how the considered physical model in the quantum measurement theory can be useful to describe and implement realistic experiments with optimal conditions. Highlights: Density operator evolution via the Master equation. Quantum dynamics for two-level systems in terms of the interatomic distance. Measure of the parameter estimation. Squeezing entropy and Heisenberg inequalities. Dynamics of the quantum fidelity.