GKP-based repeaters with loss-tolerant protocols and modified parity encoding achieve secure key rates comparable to photonic systems while using orders of magnitude fewer qubits.
One of the qubits propagates between neighbouring repeater nodes over a distanceL 0, while the other remains stationary within the repeater
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Loss-Tolerant Quantum Communication via Bosonic-GKP-Parity-Encoding
GKP-based repeaters with loss-tolerant protocols and modified parity encoding achieve secure key rates comparable to photonic systems while using orders of magnitude fewer qubits.