Efficient quantum repeater based on deterministic Rydberg gates

Journal Article · Sat May 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.052329· OSTI ID:21408803

Bo, Zhao; Mueller, Markus; Hammerer, Klemens; Zoller, Peter ^[1]

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1. Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck (Austria)

We propose an efficient quantum repeater architecture with mesoscopic atomic ensembles, where the Rydberg blockade is employed for deterministic local entanglement generation, entanglement swapping, and entanglement purification. Compared to a conventional atomic-ensemble-based quantum repeater, the entanglement distribution rate is improved by up to two orders of magnitude with the help of the deterministic Rydberg gate. This quantum repeater scheme is robust and fast, and thus opens up a way for practical long-distance quantum communication.

• OSTI ID: 21408803
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMMUNICATIONS
DISTANCE
DISTRIBUTION
INFORMATION
QUANTUM ENTANGLEMENT
QUANTUM INFORMATION