Creation of high-quality long-distance entanglement with flexible resources

Details Creation of high-quality long-distance entanglement with flexible resources Creation of high-quality long-distance entanglement with flexible resources

2008-08-18

arxiv.org/abs/0808.2320v6

PHYSICAL REVIEW A 79, 052323 (2009)

Physics

Quantum Physics

9 pages, 5 figures

Scientific paper

10.1103/PhysRevA.79.052323

We present a quantum repeater protocol that generates the elementary segments of entangled photons through the communication of qubus in coherent states. The input photons at the repeater stations can be in arbitrary states to save the local state preparation time for the operations. The flexibility of the scheme accelerates the generation of the elementary segments (close to the exact Bell states) to a high rate for practical quantum communications. The entanglement connection to long distances is simplified and sped up, possibly realizing an entangled pair of high quality within the time in the order of that for classical communication between two far-away locations.

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