Efficient Long-distance Quantum Communication Using Microtoroidal Resonators

Details Efficient Long-distance Quantum Communication Using Microtoroidal Resonators Efficient Long-distance Quantum Communication Using Microtoroidal Resonators

2008-09-23

arxiv.org/abs/0809.3928v1

Physics

Quantum Physics

4 pages 4 figures

Scientific paper

Based on the interaction between a three-level system and a microtoroidal resonator, we present a scheme for long-distance quantum communication in which entanglement generation with near 0.5 success probability and swaps can be implemented by accurate state detection via measuring about 100 photons. With this scheme the average time of successful entanglement distribution over 2500 km with high fidelity can be decreased to only about 30 ms, by 7 orders of magnitude smaller compared with famous Duan-Lukin-Cirac-Zoller (DLCZ) protocol [L.-M. Duan {\it et al.} Nature (London) {\bf414}, 413 (2001)].

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