Quantum Repeaters with Photon Pair Sources and Multi-Mode Memories

Details Quantum Repeaters with Photon Pair Sources and Multi-Mode Memories Quantum Repeaters with Photon Pair Sources and Multi-Mode Memories

2007-01-31

arxiv.org/abs/quant-ph/0701239v2

Phys. Rev. Lett. 98, 190503 (2007)

Physics

Quantum Physics

4 pages, 2 figures, to appear in PRL, accepted version

Scientific paper

10.1103/PhysRevLett.98.190503

We propose a quantum repeater protocol which builds on the well-known DLCZ protocol [L.M. Duan, M.D. Lukin, J.I. Cirac, and P. Zoller, Nature 414, 413 (2001)], but which uses photon pair sources in combination with memories that allow to store a large number of temporal modes. We suggest to realize such multi-mode memories based on the principle of photon echo, using solids doped with rare-earth ions. The use of multi-mode memories promises a speedup in entanglement generation by several orders of magnitude and a significant reduction in stability requirements compared to the DLCZ protocol.

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