Atomic bright soliton interferometry

The properties of nonlinear interference pattern between atomic bright solitons are characterized analytically, with the aid exact solutions dynamical equation in mean-field approximation. It is shown that relative velocity, phase, and interaction strength can be measured from pattern. proposed to design soliton interferometry Bose–Einstein condensate. As an example, we apply them measure gravity acceleration ultra-cold atom systems a high precision degree. results also meaningful for precise measurements optical fiber, water wave tank, plasma, other systems.