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Published May 30, 2013 | Published
Journal Article Open

Hybrid-system approach to fault-tolerant quantum communication

Abstract

We present a layered hybrid-system approach to quantum communication that involves the distribution of a topological cluster state throughout a quantum network. Photon loss and other errors are suppressed by optical multiplexing and entanglement purification. The scheme is scalable to large distances, achieving an end-to-end rate of 1 kHz with around 50 qubits per node. We suggest a potentially suitable implementation of an individual node composed of erbium spins (single atom or ensemble) coupled via flux qubits to a microwave resonator, allowing for deterministic local gates, stable quantum memories, and emission of photons in the telecom regime.

Additional Information

© 2013 American Physical Society. Received 8 August 2012; revised manuscript received 3 April 2013; published 30 May 2013. We thank X. Zhu and S. Saito for valuable discussions. This work was supported in part by JSPS, MEXT, FIRST, and NICT in Japan.

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Published - PhysRevA.87.052333.pdf

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