Emzir, MuhammadWoolley, Matthew JPetersen, Ian2020-01-150005-1098http://hdl.handle.net/1885/197967In this article we study physical realizability for a class of nonlinear quantum stochastic differential equations (QSDEs). Physical realizability is a property in which a QSDE corresponds to the dynamics of an open quantum system. We derive a sufficient and necessary condition for a nonlinear QSDE to be physically realizable.This work was supported by the Australian Research Council under Grant Numbers FL110100020 and DP180101805.application/pdfen-AU© 2018 Elsevier Ltd201810.1016/j.automatica.2018.05.0112019-11-25