Entanglement dynamics for atoms near a reflecting boundary: Enhancement and suppression by environment-induced interactions

Abstract

We investigate how environment-induced interactions influence the entanglement dynamics of two atoms held at fixed positions near a perfectly reflecting boundary. Within the framework of open quantum systems, we explicitly incorporate the environment-induced energy shifts, including both atom-boundary contributions and an environment-induced atom-atom interaction, which are often neglected in previous studies. We show that, for any initial two-atom state, these energy-shift effects qualitatively and quantitatively modify the entanglement dynamics relative to treatments that omit them. Depending on the geometry and parameter regime, the environment-induced interactions can either enhance entanglement generation -- yielding a larger maximum concurrence and a longer entanglement lifetime -- or suppress it, reducing both the peak concurrence and the survival time. This behavior contrasts sharply with the free-space case, where the environment-induced atom-atom interaction affects entanglement generation only for a restricted class of initial states and does so in an exclusively assisting manner.

arXiv comment10 pages, 4 figures

References in corpus (24)

• Entanglement of Formation of an Arbitrary State of Two Qubits
• Finite-Time Disentanglement via Spontaneous Emission
• Sudden Death of Entanglement
• Creation of Entanglement by Interaction with a Common Heat Bath
• Environment Induced Entanglement in Markovian Dissipative Dynamics
• Dark periods and revivals of entanglement in a two qubit system
• Entanglement induced by a single-mode heat environment
• Entanglement from the vacuum
• Entanglement in the Dicke model
• Delayed (sudden) birth of entanglement
• Spontaneous excitation of an accelerated atom: The contributions of vacuum fluctuations and radiation reaction
• Spacetime structure and vacuum entanglement
• Entangling two atoms via spontaneous emission
• Entanglement dynamics for uniformly accelerated two-level atoms
• Vacuum Energy Density near Fluctuating Boundaries
• Controlling Entanglement Generation in External Quantum Fields
• The Unruh effect and entanglement generation for accelerated atoms near a reflecting boundary
• Entanglement generation in atoms immersed in a thermal bath of external quantum scalar fields with a boundary
• Entanglement dynamics for uniformly accelerated two-level atoms in the presence of a reflecting boundary
• Entanglement Dynamics of Detectors in an Einstein Cylinder
• Electromagnetic Vacuum Fluctuations and Electron Coherence II: Effects of Wavepacket Size
• Entanglement generation for uniformly accelerated atoms assisted by environment-induced interatomic interaction and the loss of the anti-Unruh effect
• Boundary Effects on Quantum Entanglement and its Dynamics in a Detector-Field System
• Asymptotic States of Accelerated Qubits with Nonzero Background Temperature