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Ultrafast and Fault-Tolerant Quantum Communication across Long Distances

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abstract

Quantum repeaters (QRs) provide a way of enabling long distance quantum communication by establishing entangled qubits between remote locations. We investigate a new approach to QRs in which quantum information can be faithfully transmitted via a noisy channel without the use of long distance teleportation, thus eliminating the need to establish remote entangled links. Our approach makes use of small encoding blocks to fault-tolerantly correct both operational and photon loss errors. We describe a way to optimize the resource requirement for these QRs with the aim of the generation of a secure key. Numerical calculations indicate that the number of quantum memory bits required for our scheme has favorable poly-logarithmic scaling with the distance across which the communication is desired.

fields

quant-ph 1

years

2025 1

verdicts

UNVERDICTED 1

representative citing papers

The Quantum Internet (Technical Version)

quant-ph · 2025-01-21 · unverdicted · novelty 4.0

The paper presents a broad vision of a future global quantum internet, with original conceptual proposals like QTCP and quantum sneakernet, while explicitly acknowledging that much of its content is review.

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  • The Quantum Internet (Technical Version) quant-ph · 2025-01-21 · unverdicted · none · ref 156 · internal anchor

    The paper presents a broad vision of a future global quantum internet, with original conceptual proposals like QTCP and quantum sneakernet, while explicitly acknowledging that much of its content is review.