An all-optical teleportation attack can perform collective eavesdropping in Gaussian QKD without channel purification, reaching optimality only with infinite entanglement and beating individual attacks with finite resources.
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Teleportation-based collective attacks in Gaussian quantum key distribution
An all-optical teleportation attack can perform collective eavesdropping in Gaussian QKD without channel purification, reaching optimality only with infinite entanglement and beating individual attacks with finite resources.