An accessible quick introduction. This abstract links to a 19-page pdf: From Cbits to Qbits: Teaching computer scientists quantum mechanics N. David Mermin h

An accessible quick introduction. This abstract links to a 19-page pdf: From Cbits to Qbits: Teaching computer scientists quantum mechanics N. David Mermin https://arxiv.org/abs/quant-ph/0207118 https://arxiv.org/abs/quant-ph/0207118 After that, the textbook by Nielsen and Chuang, Quantum Computation and Quantum Information. It's a big book but the first couple of chapters, 60 pages or so, are self-contained and make a good introduction.