Quantum repeaters for communication

Details Quantum repeaters for communication Quantum repeaters for communication

1998-03-20

arxiv.org/abs/quant-ph/9803056v1

Physics

Quantum Physics

8 pages, 3 figures, 1 table

Scientific paper

In quantum communication via noisy channels, the error probability scales exponentially with the length of the channel. We present a scheme of a quantum repeater that overcomes this limitation. The central idea is to connect a string of (imperfect) entangled pairs of particles by using a novel nested purification protocol, thereby creating a single distant pair of high fidelity. The scheme tolerates general errors on the percent level.

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