The Feynman Lectures on Physics Vol. 1 (1963) by Richard Feynman, Robert Leighton, & Matthew Sands
The Feynman Processor (1998) by Girard J. Milburn
Quantum Computing: A gentle introduction (2011) by Eleanor Rieffel and Wolfgang Polak
Quantum Computing without Magic (2008) by Zdzislaw Meglicki
Quantum Cryptography (1995) by Richard J. Hughes