Quantum teleportation is one well-known quantum information processing operation which reliably transfers an unknown quantum state from one point to another distant point, destroying the original state in the process.

Reference

Nielsen, M.A. and Chuang, I.L. Quantum computation and quantum information. Cambridge University Press, 2000.

1976 - Polish mathematical physicist Roman Ingarden, in one of the first attempts at creating a quantuminformation theory, shows that Shannon information theory cannot directly be generalized to the quantum case, but rather that it is possible to construct a quantuminformation theory which is a generalization of Shannon's theory.

This is an approach to making quantum computers that can compute with large numbers of qubits for long periods of time.

Slowing the light down alows information to be mapped on the light pulse, like memory in a conventional computer.

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