Stabilization of nonlinear lattices: A route to superfluidity and hysteresis
Stabilization of nonlinear lattices: A route to superfluidity and hysteresis
The Bloch states of a Bose-Einstein condensates (BECs) in pure nonlinear lattices (NLs) are dynamically unstable, so that they cannot show superfluidity. We overcome this problem by finding that the two-component BECs in NLs can be stabilized by the coherent linear coupling. Furthermore, in the limit of the strong coherent …