Providing a deeper understanding of the microscopic world through quantum
theory, this supplementary text covers a wider range of topics than conventional
textbooks. Emphasis is given to modern achievements such as entanglement,
quantum teleportation, and Bose-Einstein condensation. Macroscopic quantum
effects of practical relevance, for example superconductivity and the quantum
Hall effect, are also described. The author discusses the exciting prospects for
quantum computing in the future.