Coherent State Assisted Entanglement Generation Between Quantum Memories

• URL: http://arxiv.org/abs/2504.20344v1
• Date: Tue, 29 Apr 2025 01:27:32 GMT
• Title: Coherent State Assisted Entanglement Generation Between Quantum Memories
• Authors: Chaohan Cui, Prajit Dhara, Saikat Guha,
• Abstract summary: We propose weak-coherent-state-assisted protocols that can generate entanglement near-deterministically between reflective-cavity-based quantum memories.<n>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.
• Score: 1.2262052015443148
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• 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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