A high bandwidth quantum repeater

Details A high bandwidth quantum repeater A high bandwidth quantum repeater

2008-08-03

arxiv.org/abs/0808.0307v1

Phys. Rev. Lett. 101, 040502 (2008)

Physics

Quantum Physics

5 pages

Scientific paper

10.1103/PhysRevLett.101.040502

We present a physical- and link-level design for the creation of entangled pairs to be used in quantum repeater applications where one can control the noise level of the initially distributed pairs. The system can tune dynamically, trading initial fidelity for success probability, from high fidelity pairs (F=0.98 or above) to moderate fidelity pairs. The same physical resources that create the long-distance entanglement are used to implement the local gates required for entanglement purification and swapping, creating a homogeneous repeater architecture. Optimizing the noise properties of the initially distributed pairs significantly improves the rate of generating long-distance Bell pairs. Finally, we discuss the performance trade-off between spatial and temporal resources.

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