  Einstein-Podolsky-Rosen (EPR) steering is one of the most intriguing features
of quantum mechanics and an important resource for quantum communication. For
practical applications, it remains a challenge to protect EPR steering from
decoherence due to its intrinsic difference from entanglement. Here, we
experimentally demonstrate the distillation of Gaussian EPR steering and
entanglement in lossy and noisy environments using measurement-based noiseless
linear amplification. Different from entanglement distillation, the extension
of steerable region happens in the distillation of EPR steering besides the
enhancement of steerabilities. We demonstrate that the two-way or one-way
steerable region is extended after the distillation of EPR steering when the
NLA is implemented based on Bob's or Alice's measurement results. We also show
that the NLA helps to extract secret key from insecure region in one-sided
device-independent quantum key distribution with EPR steering. Our work paves
the way for quantum communication exploiting EPR steering in practical quantum
channels.
