Entanglement dynamics in open two-qubit systems via diffusive quantum trajectories
Quantum Physics
2010-11-23 v2
Abstract
We use quantum diffusive trajectories to prove that the time evolution of two-qubit entanglement under spontaneous emission can be fully characterized by optimal continuous monitoring. We analytically determine this optimal unraveling and derive a deterministic evolution equation for the system's concurrence. Furthermore, we propose an experiment to monitor the entanglement dynamics in bipartite two-level systems and to determine the disentanglement time from a single trajectory.
Cite
@article{arxiv.1006.1452,
title = {Entanglement dynamics in open two-qubit systems via diffusive quantum trajectories},
author = {Carlos Viviescas and Ivonne Guevara and André R. R. Carvalho and Marc Busse and Andreas Buchleitner},
journal= {arXiv preprint arXiv:1006.1452},
year = {2010}
}
Comments
4 pages, 2 figures, changed title, abstract and fig. 2, corrected typos