Generalized Quantum Repeater Graph States.

Authors

Bikun Li, Kenneth Goodenough, Filip Rozpędek, Liang Jiang

Published in

Physical review letters. Volume 134. Issue 19. Pages 190801. May 16, 2025.

Abstract

All-photonic quantum repeaters are essential for establishing long-range quantum entanglement. Within repeater nodes, reliably performing entanglement swapping is a key component of scalable quantum communication. To tackle the challenge of probabilistic Bell state measurement in linear optics, which often leads to information loss, various approaches have been proposed to ensure the loss tolerance of distributing a single ebit. We have generalized previous work regarding repeater graph states with elaborate connectivity, enabling the efficient establishment of exploitable ebits at a finite rate with high probability. We demonstrate that our new scheme significantly outperforms the previous work with much flexibility and discuss the generation overhead of such resource states. These findings offer new insights into the scalability and reliability of loss-tolerant quantum networks.

PMID:
40446228
Bibliographic data and abstract were imported from PubMed on 31 May 2025.

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