Every positive partial transpose (PPT) map now possesses a definitively finite entanglement-breaking index, resolving a long-standing challenge in quantum information theory. Previously requiring restrictive assumptions, the entanglement-breaking index of a broad family of these maps is now bounded above by 3, irrespective of dimension. This establishes a uniform limit and offers compelling evidence supporting the PPT-cubed conjecture.
Researchers Bound PPT Channel Breaking Index to Three
Every positive partial transpose (PPT) map now possesses a definitively finite entanglement-breaking index, resolving a long-standing challenge in quantum information theory. Previously requiring restrictive assumptions, the entanglement-breaking index of a broad family of these maps is now bounded above by 3, irrespective of dimension. This establishes a uniform limit and offers compelling evidence supporting the PPT-cubed conjecture.