All-photonic MDI-QKD protocol surpasses the single-repeater bound with key-rate scaling approaching η^{2/5} when quantum signals travel at two-thirds classical speed, using temporal multiplexing to improve rates without perfect memories.
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All-photonic quantum key distribution beyond the single-repeater bound
All-photonic MDI-QKD protocol surpasses the single-repeater bound with key-rate scaling approaching η^{2/5} when quantum signals travel at two-thirds classical speed, using temporal multiplexing to improve rates without perfect memories.