This chapter contains sections titled:
Introduction
The Non-Additivity of Private Information
Channel Combination for Superadditivity of Private Information
Superactivation of Quantum Capacity of Zero-Capacity Quantum Channels
Behind Superactivation: The Information Theoretic Description
Geometrical Interpretation of Quantum Capacity
Example of Geometric Interpretation of Superactivation
Extension of Superactivation for More General Classes
Superactivation of Zero-Error Capacities
Further Reading