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arXiv · 2504.20344

Coherent State Assisted Entanglement Generation Between Quantum Memories

Chaohan Cui·Prajit Dhara·Saikat Guha
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Abstract

Generating entanglement deterministically at a capacity-approaching rate is critical for next-generation quantum networks. We propose weak-coherent-state-assisted protocols that can generate entanglement near-deterministically between reflective-cavity-based quantum memories at a success rate that exceeds the 50\% limit associated with single-photon-mediated schemes. The most pronounced benefit is shown in the low-channel-loss regime and persists even with moderate noise. We extend our protocols to entangle an array of memories in a GHZ state, and infer that it yields an exponential speed-up compared to previous single-photon-based protocols.

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Chaohan Cui, Prajit Dhara, Saikat Guha. 2025-04-29. Coherent State Assisted Entanglement Generation Between Quantum Memories. https://arxiv.org/abs/2504.20344

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