Measurement-Device-Independent Entanglement Detection for Continuous-Variable Systems

We study the detection of continuous-variable entanglement, for which most existing methods designed so far require a full specification devices, and we present protocols entanglement in scenario where measurement devices are completely uncharacterized. first generalize, to continuous variable regime, seminal results by Buscemi [Phys. Rev. Lett. 108, 200401 (2012)] Branciard et al. 110, 060405 (2013)], showing that all entangled states can be detected this scenario. Most importantly, then describe practical protocol allows measurement-device-independent certification two-mode Gaussian states. This is feasible with current technology as it makes use only standard optical setups such coherent homodyne measurements.