Strong subadditivity inequality for quantum entropies and four-particle entanglement Academic Article uri icon


  • The strong subadditivity inequality (SSI) for quantum entropies of a three-particle composite system via the entanglement measurement for a four-particle system were studied. The inequality in quantum information theory based on the stimulated Raman adiabatic technique used two three-level atoms initially in their ground states in a two-mode cavity. The system, realized via cavity quantum electrodynamics (QED) methods, was used in the preparation of a pure four-particle entangled state. The investigation also proposed the quantum entropy measurement for the corresponding four-particle entanglement under consideration.

published proceedings

  • Physical Review A - Atomic, Molecular, and Optical Physics

author list (cited authors)

  • Biswas, A., & Agarwal, G. S.

complete list of authors

  • Biswas, A||Agarwal, GS

publication date

  • January 2003