Quantum information is the study of physical processes that acts on quantum systems when viewed from an information theoretic point of view. The fundamental questions involve the entropy and entanglement quantification, and the storage and transmission of quantum information.
The domains of application of quantum information include the practical (quantum simulations of pharmaceutical drugs), the scientific (quantum metrology), the covert (quantum cryptography) and even the philosophical (quantum interpretation and the fundamental physical foundations of the universe).
Research that is currently carried out includes the study of the capacity of Noisy Quantum Channels. The capacity is the amount of information that can be transmitted through the channel per use. Channel Capacity is crucial to the information age. A correct understanding of the maximum amount of information that can be transmitted through a channel and its concomitant encoding permits efficient use of the available resources. Channel capacity theory is the basis of technological communication. The next major advancement in the field of communication is the move from classical channels to quantum channels, which brings with it new unrivalled possibilities such us Quantum Cryptography. To correctly understand the Channel Capacity requires research into new tools and methods.