Quantum Computing (2nd ed.)

After the first edition of this book was published, I received much positive feedback from the readers. It was very helpful to have all those comments sug­ gesting improvements and corrections. In many cases, it was suggested that more aspects on quantum information would be welcome. Unfortunately, I am afraid that an attempt to cover such a broad area as quantum informa­ tion theory would make this book too scattered to be helpful for educational purposes. On the other hand, ladmit that some as