One-Way Quantum Repeater with Rare-Earth-Ions Doped in Solids

• URL: http://arxiv.org/abs/2404.09082v1
• Date: Sat, 13 Apr 2024 21:08:18 GMT
• Title: One-Way Quantum Repeater with Rare-Earth-Ions Doped in Solids
• Authors: Yisheng Lei,
• Abstract summary: One-way quantum repeaters eliminate the need for two-way classical communications. Rare-earth-ions doped in solids and coupled with nano-cavity can be used to generate photonic cluster state efficiently.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum repeaters are proposed to overcome exponential photon loss over distance in fibers. One-way quantum repeaters eliminate the need for two-way classical communications, which can potentially outperform quantum memory based quantum repeaters. I propose that rare-earth-ions doped in solids and coupled with nano-cavity can be used to generate photonic cluster state efficiently, which serve as good platforms for one-way quantum repeater nodes. In addition, I propose a multiplexed scheme of photonic tree cluster state generation with multiple quantum emitters. With less than 100 quantum emitters, secret key rates can reach the order of MHz over a few thousand kilometers. This proposal is especially useful for generating large scale photonic cluster state, which is essential for correcting operational errors during processing in quantum repeater nodes.

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