Simulating arbitrary Gaussian circuits with linear optics

@article{Chakhmakhchyan2018SimulatingAG,
title={Simulating arbitrary Gaussian circuits with linear optics},
author={L. Chakhmakhchyan and N. Cerf},
journal={Physical Review A},
year={2018},
volume={98},
pages={062314}
}

Linear canonical transformations of bosonic modes correspond to Gaussian unitaries, which comprise passive linear-optical transformations as effected by a multiport passive interferometer and active Bogoliubov transformations as effected by a nonlinear amplification medium. As a consequence of the Bloch-Messiah theorem, any Gaussian unitary can be decomposed into a passive interferometer followed by a layer of single-mode squeezers and another passive interferometer. Here, it is shown how to… CONTINUE READING