Details

Autor(en) / Beteiligte

• Viviescas, Carlos
• Guevara, Ivonne
• Carvalho, André R R
• Busse, Marc
• Buchleitner, Andreas

Titel

Entanglement dynamics in open two-qubit systems via diffusive quantum trajectories

Ist Teil von

• Physical review letters, 2010-11, Vol.105 (21), p.210502-210502, Article 210502

Ort / Verlag

United States

Erscheinungsjahr

2010

Link zum Volltext

Quelle

American Physical Society

Beschreibungen/Notizen

• 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.