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Quantum communication

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Abstract

The communication of information between two spatially separated parties requires a directed resource, such as a bit or qubit, that is naturally constrained by the speed of light and, in the case of the quantum information, is subject to the constraints of the no-cloning theorem. Several specifically quantum-mechanical protocols are discussed in this chapter that illustrate different uses of the combination of resources available to support communication and information processing when quantum resources are available. It is important to note that, despite the value of entanglement for communication, classical communication cannot be simulated by the resource of shared quantum entanglement alone in an attempt to circumvent this speed-of-light constraint, due to the undirected nature of entanglement.1

Keywords

Quantum Channel Bell State Quantum Communication Bloch Sphere Quantum Capacity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2007

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