Proposes all-photonic quantum repeaters with 9 km spacing via GKP-Steane code concatenation, new Bell-pair heuristics, and mirror-cavity memory, achieving 1000 km links with few thousand GKP qubits per station under modeled imperfections.
Resource-efficient high-threshold fault-tolerant quantum computa- tion with weak nonlinear optics,
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High-Rate and Resource-Efficient All-Photonic Quantum Repeater Architectures with 9 km Repeater Spacing
Proposes all-photonic quantum repeaters with 9 km spacing via GKP-Steane code concatenation, new Bell-pair heuristics, and mirror-cavity memory, achieving 1000 km links with few thousand GKP qubits per station under modeled imperfections.