Quantum communication and the creation of maximally entangled pairs of atoms over a noisy channel

Preprint

11 December 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.quant-ph/9712027

Abstract

We show how to create maximally entangled EPR pairs between spatially distant atoms, each of them inside a high-Q optical cavity, by sending photons through a general, noisy channel, such as a standard optical fiber. An error correction scheme that uses few auxiliary atoms in each cavity effectively eliminates photoabsorption and other transmission errors. This realizes the `absorption free channel.' A concatenation protocol using the absorption free channel allows for quantum communication with single qubits over distances much larger than the coherence length of the channel.

Keywords

ABSORPTION
ATOMS
CREATE MAXIMALLY ENTANGLED
ENTANGLED PAIRS
EPR
MAXIMALLY ENTANGLED
NOISY CHANNEL
OPTICAL FIBER
QUANTUM COMMUNICATION
CREATION OF MAXIMALLY

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Version 1, 1997-12-11, ArXiv

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