Efficient quantum repeater based on deterministic Rydberg gates

Abstract

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 with 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 new quantum repeater scheme is robust and fast, and thus opens up a new way for practical long-distance quantum communication.

5 pages, 2 figures

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Cited by in corpus (45)

• Dark Entangled Steady States of Interacting Rydberg Atoms
• Quantum teleportation between remote atomic-ensemble quantum memories
• Coherence and Rydberg blockade of atomic ensemble qubits
• Fidelity of a Rydberg blockade quantum gate from simulated quantum process tomography
• Practical figures of merit and thresholds for entanglement distribution in quantum networks
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• Ground-state blockade of Rydberg atoms and application in entanglement generation
• Driven-dissipative dynamics of a strongly interacting Rydberg gas
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• Quantum network of neutral atom clocks
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• Realization and characterization of single-frequency tunable 637.2 nm high-power laser
• Development and characterization of a 2.2 W narrow-linewidth 318.6 nm ultraviolet laser
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• Quantum defects of $n$F${}_J$ levels of Cs Rydberg atoms
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