Controlling transport and entanglement of two particles in a bipartite lattice

Abstract

We consider two Bose particles held in a bipartite lattice with two different separations fitting the nearest-neighbor tight-binding approximation. Applying a strong driving field of high frequency and a large interaction intensity, we analytically construct entangled Floquet states and slowly varying Rabi-oscillation states of the system. Under the interaction-independent and interaction-dependent conditions of the selective coherent destruction of tunneling, we propose a scheme for manipulating separated and co-site transports of the two particles in the same or opposite directions. The results could be useful for transporting quantum information carried by a few particles in a bipartite superlattice.