Entanglement distillation is an indispensable ingredient in extended quantum communication networks. Distillation
protocols are necessarily non-deterministic and require non-trivial experimental techniques such as noiseless
amplification. We show that noiseless amplification could be achieved by performing a post-selective filtering of
measurement outcomes. We termed this protocol measurement-based noiseless linear amplification (MBNLA).
We apply this protocol to entanglement that suffers transmission loss of up to the equivalent of 100km of optical
fibre and show that it is capable of distilling entanglement to a level stronger than that achievable by transmitting
a maximally entangled state through the same channel. We also provide a proof-of-principle demonstration
of secret key extraction from an otherwise insecure regime via MBNLA. Compared to its physical counterpart,
MBNLA not only is easier in term of implementation, but also allows one to achieve near optimal probability of
success.
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