I can tell you the book that got me excited about quantum computing: The Fabric of Reality, by David Deutsch. It ranges over a much, much wider field than just QC, but if you want to understand how one of the best theoreticians thinks then there is no better book. Comprehensible by a smart 13 year old (as I was when I read it).
If you have some mathematical maturity, I heartily recommend Quantum Computing since Democritus, by Scott Aaronson. The book's web page is at http://www.scottaaronson.com/democritus/, where you will also find freely available the lecture notes on which the book is based. Scott Aaronson's blog (http://www.scottaaronson.com/) is also a very valuable source of insider knowledge on QC, much of it targeted at a broader audience. I recommend his "Ask Me Anything!" posts for a good breadth of topics and technicality.
Schrödinger's Killer App by Jonathan P. Dowling is a pleasant alternative to Fabric of Reality if the latter is too out-there for your tastes. No equations, but it definitely has some conceptual meat on it.
If you have some mathematical maturity, I heartily recommend Quantum Computing since Democritus, by Scott Aaronson. The book's web page is at http://www.scottaaronson.com/democritus/, where you will also find freely available the lecture notes on which the book is based. Scott Aaronson's blog (http://www.scottaaronson.com/) is also a very valuable source of insider knowledge on QC, much of it targeted at a broader audience. I recommend his "Ask Me Anything!" posts for a good breadth of topics and technicality.
Schrödinger's Killer App by Jonathan P. Dowling is a pleasant alternative to Fabric of Reality if the latter is too out-there for your tastes. No equations, but it definitely has some conceptual meat on it.