Elements of information theory
Elements of information theory
Quantum computation and quantum information
Quantum computation and quantum information
A Domain Theoretic Model of Qubit Channels
ICALP '08 Proceedings of the 35th international colloquium on Automata, Languages and Programming, Part II
A Resource Framework for Quantum Shannon Theory
IEEE Transactions on Information Theory
A Free Object in Quantum Information Theory
Electronic Notes in Theoretical Computer Science (ENTCS)
A Quantum Representation for Involution Groups
Electronic Notes in Theoretical Computer Science (ENTCS)
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The standard teleportation protocol requires the availability of a maximally entangled state. Because such states are difficult to consistently generate experimentally, we study teleportation in which the entanglement used need not be maximal. The relationship between the pure state sent and the mixed state received is shown to define a convex linear, trace preserving, completely positive map on the set of 2x2 density operators-in the formal sense of quantum information theory, a qubit channel-and in fact, one whose Bloch representation is diagonal. We then calculate the amount of classical information that can be teleported using a given amount of entanglement. This analysis leads to a remarkable discovery: that the standard measure of entanglement for bipartite states is not correlated with the amount of information that can be teleported using an entangled state.