## The physics of quantum information: quantum cryptography, quantum teleportation, quantum computation"This volume covers Quantum Cryptography, Quantum Teleportation and Quantum Computation. The book presents clearly the fundamental concepts, amply illustrated with theoretical calculations and descriptions of experimental work. Consequently, this is a first-class primer, pitched at a level suitable for honours students or above." The PhysicistThe leading experts from "The Physics of Quantum Information" network, an initiative of the European Commission, bring together the most recent results of the emerging area of quantum technology. Written in a consistent style as a research monograph, the book introduces raders to quantum cryptography, quantum teleportation, and quantum computation, considering both theory and newest experiments. Thus scientists working in the field and advanced students will find a rich source of information on this exciting new area. |

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### Contents

Quantum Cryptography | 15 |

Quantum Dense Coding | 49 |

Concepts of Quantum Computation | 93 |

Copyright | |

6 other sections not shown

### Common terms and phrases

Alice and Bob Alice's amplitude atom basis beam beamsplitter Bell Bell-state bits Bob's classical computer CNOT coherent coincidence components cooling correlations corresponding coupling decoherence density matrix described detection detectors detuning down-conversion encoded ensemble entangled photons entanglement purification entanglement swapping environment EPR pair error operators example excited experimental experiments exponentially fibre fidelity field frequency function Hadamard Hamiltonian implement initial input interaction interferometer ion trap key distribution laser linear matrix maximally entangled measurement mode motion NMR quantum computers obtained optical orthogonal oscillator output performed phase shift photon Phys physical possible probability problem procedure protocol pulse quantum algorithm quantum channel quantum computer quantum cryptography quantum error correction quantum gates quantum information quantum key distribution quantum mechanics quantum system quantum teleportation qubit Rabi realise result rotation scheme Sect shown in Fig sideband signal spin string superposition syndrome transform transition transmission trapped ions two-particle unitary vibrational