Robust asymptotic entanglement under multipartite collective dephasing

Abstract

We derive an analytic solution for the ensemble-averaged collective dephasing dynamics of $N$ noninteracting atoms in a fluctuating homogeneous external field. The obtained Kraus map is used to specify families of states whose entanglement properties are preserved at all times under arbitrary field orientations, even for states undergoing incoherent evolution. Our results apply to arbitrary spectral distributions of the field fluctuations.

7 pages (incl. Supplementary Materials), 3 figures

References in corpus (3)

• Quantum computing with trapped ions
• 14-qubit entanglement: creation and coherence
• Nonlinear atom interferometer surpasses classical precision limit

Cited by in corpus (2)

• Time-invariant entanglement and sudden death of nonlocality for multipartite systems under collective dephasing
• Frozen and Invariant Quantum Discord under Local Dephasing Noise