Temporally multiplexed quantum repeaters with atomic gases

Details Temporally multiplexed quantum repeaters with atomic gases Temporally multiplexed quantum repeaters with atomic gases

2010-07-28

arxiv.org/abs/1007.5028v1

Phys. Rev. A 82, 010304(R) (2010)

Physics

Quantum Physics

5 pages, 1 figure

Scientific paper

10.1103/PhysRevA.82.010304

We propose a temporally multiplexed version of the Duan-Lukin-Cirac-Zoller (DLCZ) quantum repeater protocol using controlled inhomogeneous spin broadening in atomic gases. A first analysis suggests that the advantage of multiplexing is negated by noise due to spin wave excitations corresponding to unobserved directions of Stokes photon emission. However, this problem can be overcome with the help of a moderate-finesse cavity which is in resonance with Stokes photons, but invisible to the anti-Stokes photons. Our proposal promises greatly enhanced quantum repeater performance with atomic gases.

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