I have just started self-learning quantum information theory, and have a sub-trivial question: what is the difference between that field of study and quantum computation?
I have some understanding that quantum information theory studies the way in which quantum systems can hold information, and that quantum computation (from what I can tell) seems to be more about studying how logic gates can manipulate that information.
I have seen several textbooks with names like "Quantum Computation and Quantum Information Theory", which definitely suggests that these are not the same field, but I have found it tough to find a definitive definition of both of them by the same author. Indeed, the textbook I am currently reading does define information theory in great detail, but doesn't define quantum computation theory (as a subject). This author then goes on to tell us how useful information theory is if we want to make a quantum computer. This suggests to me that they are the same field...maybe.