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A Paradigm Called Magnetism, by S. Dattagupta

classical picture of electronic systems. The section ‘Coulomb blockade’ starts from simple electrostatics and extends to the discussion of single electron transistors, more complicated structures and superconducting systems. Quantum interference effects are covered in the following section. Perhaps the most important section, ‘Qubits and quantum dots’ first moves away from condensed state physics to give a readable account of the theoretical basis of quantum computation. Quantum teleportation is discussed and the experimenters ‘Alice’ and ‘Bob’, familiar to anyone in this field, put in an appearance. The section then returns to the practicalities of the construction and use of quantum dots and the storage and transport of quantum bits of information or qubits. The experimental section discusses charge qubits, phase qubits, flux qubits and spin qubits. The structures outlined may well be overtaken by developments in the field, but the section still forms an excellent basic introduction. The final and possibly the most difficult, section, ‘Interaction, relaxation and decoherence’, deals with the topic of the interaction of nanostructures with its electromagnetic environment which may result in decoherence of information. The Kondo effect, the subject of much research, is also discussed. Each section contains ‘control questions’ to ensure the reader is keeping up, and exercises (but no solutions). The book concludes with three brief appendices and a detailed list of references of works up to 2007. It can be strongly recommended.