Coherent State Assisted Entanglement Generation Between Quantum Memories

Abstract:Generating entanglement deterministically at a capacity-approaching rate is critical for next-generation quantum networks. We revisit previous protocols and model a new coherent-state-assisted protocol variant that can generate entanglement near-deterministically between reflective-cavity-based quantum memories at a success rate that exceeds the 50\% limit of single-photon-mediated schemes. The most pronounced benefit is shown in the low-channel-loss regime and persists even with moderate noise. We generalize our protocols from entangling two memories to entangling an array of memories in a GHZ state, and show an exponential increase in all-success probability compared to previous single-photon-based protocols under a common restart-on-failure rule.

arXiv:2504.20344 [quant-ph]

(or arXiv:2504.20344v3 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2504.20344 Focus to learn more arXiv-issued DOI via DataCite

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