Updated to describe seminal experiments that have been done since the first edition published, these more recent experiments have done much to sharpen and shed light on the challenges discussed in the first edition.  Some questions have been answered, while others have been re-framed by this new work.

A new chapter on the exciting new field of Quantum Information and Computation includes a discussion of quantum information and quantum computation, including the topics of quantum cryptography, quantum teleportation, and the deutsch/jozsa algorithm in quantum computation.

Technology has advanced so rapidly that many of the ground-breaking experiments described in the previous edition can now be done in undergraduate labs and integrated into the undergraduate curriculum.  The second edition contains a detailed, annotated bibliography of recently published articles describing these undergraduate experiments. 

Conceptual issues are presented in an experimental context, in which the difficulties of interpretation are dramatized by means of reference to actual contemporary experiments.

The book’s aim is explicitly pedagogical. It is designed to be accessible to a wide range of readers. Topics are introduced only to the extent that they illustrate one or another of the overarching themes of quantum theory.