Quantum entanglement dynamics and decoherence wave in spin chains at finite temperatures

Abstract

We analyze the quantum entanglement at the equilibrium in a class of exactly solvable one-dimensional spin models at finite temperatures and identify a region where the quantum fluctuations determine the behavior of the system. We probe the response of the system in this region by studying the spin dynamics after projective measurement of one local spin which leads to the appearance of the ``decoherence wave''. We investigate time-dependent spin correlation functions, the entanglement dynamics, and the fidelity of the quantum information transfer after the measurement.

Phys. Rev. A, accepted for publication

References in corpus (3)

• Entanglement and quantum phase transition in the extended Hubbard model
• Entangled Quantum States of Magnetic Dipoles
• Finite temperature quantum correlations in $SU(2{)}_c$ quark states and quantum spin models

Cited by in corpus (12)

• Quantum Communication through Spin Chain Dynamics: an Introductory Overview
• Holographic local quench and effective complexity
• Variance squeezing and entanglement of the XX central spin model
• Quantum channels in random spin chains
• Dynamics of entanglement between two harmonic modes in stable and unstable regimes
• Reconstruction of classical skyrmions from Anderson towers: quantum Darwinism in action
• Decoherence wave in magnetic systems and creation of Néel antiferromagnetic state by measurement
• W-like states of N uncoupled spins 1/2
• From locality to irregularity: Introducing local quenches in massive scalar field theory
• Entanglement generation resonances in XY chains
• Antiferromagnetic order without recourse to staggered fields
• Two Qubit Entanglement in $XYZ$ Magnetic Chain with DM Antisymmetric Anisotropic Exchange Interaction