Four-wave mixing in spin–orbit coupled Bose–Einstein condensates
Four-wave mixing in spin–orbit coupled Bose–Einstein condensates
Abstract We describe possibilities of spontaneous, degenerate four-wave mixing (FWM) processes in spin–orbit coupled Bose–Einstein condensates. Phase matching conditions (i.e., energy and momentum conservation laws) in such systems allow one to identify four different configurations characterized by involvement of distinct spinor states in which such a process can take place. …