Strong subadditivity inequality for quantum entropies and four-particle entanglement

Details Strong subadditivity inequality for quantum entropies and four-particle entanglement Strong subadditivity inequality for quantum entropies and four-particle entanglement

2003-07-29

arxiv.org/abs/quant-ph/0307206v1

Phys. Rev. A 68, 054303 (2003).

Physics

Quantum Physics

5 pages, 3 figures, RevTeX4, submitted to PRA

Scientific paper

10.1103/PhysRevA.68.054303

Strong subadditivity inequality for a three-particle composite system is an important inequality in quantum information theory which can be studied via a four-particle entangled state. We use two three-level atoms in $\Lambda$ configuration interacting with a two-mode cavity and the Raman adiabatic passage technique for the production of the four-particle entangled state. Using this four-particle entanglement, we study for the first time various aspects of the strong subadditivity inequality.

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