Steering between outputs of a beamsplitter using Gaussian states of light with excess noise
Eugenia Benech, A. Auyuanet, A. Lezama · arXiv (Cornell University) · 2021
We have studied the conditions for quantum steering between output modes when squeezed Gaussian light and vacuum mix in a beamsplitter as a function of the amount of squeezing and purity of the incident state. For Gaussian measurements, we find that for sufficiently strong squeezing, steering is possible regardless of the purity of the incident state. Two different types of non-Gaussian measurements were also considered. For one of them, an increase with respect to Gaussian measurements of the set of two-way-steerable states is obtained only for unbalanced beamsplitters.